Luqmanux

Long time no blog

2011-04-12T00:02:00.000+02:00

people usually say: Long time, no see! and this happens now in the blogosphere!

Well, it has been a bit hectic for me last quarter starting a new job and getting acquainted to it, and truth be said, it is really interesting on my journey of understanding how different jobs in an enterprise should really be and understand things from different perspectives.

The reason I usually like to get to learn something new every now and then, is that to make decisions you need to see the situation from different angles, and what you see depends on where you stand, so if you stand on some reasonable places it would be a good way to make sound decisions.

I hope things will go smooth during the process, GTD had been instrumental in my journey on keeping control of things, now some applications where having a huge contribution to the success of Q1, I will mention some of them:

1- Xobni
2- Evernote
3- iPhone!

In the upcoming blog posts I will talk about each in detail.

Until then, hope to see you soon!

Blogging from my iPhone about Accessories

2010-11-09T22:23:00.000+02:00

I'm just writing this short blog post to reflect my impressions on some of the cool accessories for iPhone 4.

I believe these are essential for any commuter .

Apple Wireless Keyboard

This one is cool for keeping your pace writing your blog posts, especially of you are the kind of person that is always on the go, it's also neat for writing your meeting minutes just right after the meeting if you are commuting with a company driver, once your are stranded at a traffic jam you will never regret the chance to write that monthly report or just turn on you wireless mobile connection to check your emails with more focus and read every line in that "I will read it later" email series while enjoying a full response to it.

You can take the chance to work on your added value projects that promotes your value within the enterprise in that time.

A tool like Evernote is killer in this regard, since you will write offline and then find your notes at the Desktop. Want a simpler option? Simple note is a good alternative as well.

This keyboard works virtually with any device that support Bluetooth keyboards, Starting by an iMac Desktop, Air, Book Pro, iTouch, iPhone, iPad and Windows XP and Vista and 7!

One trick you will need is to know that Holding down fn and then hitting delete deletes to the right. Which many people think that Deleting to the right is missing feature on this keyboard.

Many reviews say that the battery life is great, up to 4 Months of continuous use and the two A4 batteries are rechargeable,

iTrip Auto Universal Plus

I have a story with this one; most Kia Optima 2008 cars have a problem in the AUX function switching from the FM Radio, that will make it impossible to listen to your Audio books from within the iPhone into the car speakers.

The FM module has a great sound quality, and is quite handy, I tried it today and it's priced reasonably.

PDair Leather Case for Apple iPhone 4 (Flip Type, Black)

A must for any iPhone in the business environment, just try it and you will know why.

iPhone 4 Car Glass Mount Rotatable Rack Holder

This one is excellent along side 2 things:

1- Google Maps, to find the shortest way using the “Directions Feature” .

BH08N Bluetooth Headset

I grabbed this quick Pick from Tesco in Oxford, it’s really handy to the point that I bought two in a Sale.

I can’t but recommend any want to buy, it worth the value, and charges through USB. I charge it once every month!

Here is a review about the unit.

Apple iPhone Car charger

Impressions on iPhone 4

2010-10-23T00:33:00.001+02:00

After months of thinking and intimidating (Just like I used to do back when I moved from Palm OS to Windows Mobile, The Dark Side at the time)); I have finally made the move to the current one, that is iPhone.

Yesterday, I had to meet two of my friends, one with HTC HD 2 and the other is with iPhone 3 GS with a Version 4 ROM. I happened to have my HTC Touch Diamond 2, and we ran the following test: locating something on the map, and going to it with scarce resources in terms of Wi-Fi hot spots, GPRS … etc .

There’s an amazing sense of serendipity when you realize that you can skip sourcing the web because you already have what you’re looking for. And this is what you feel when you have the improved feature of caching Google maps offline .

It’s only then when I quite realized that: “ Whatever exists on other platforms it's still not on par with what's available for the iPhone”.

Aside from pricing, which is currently good and reasonable comparing with a couple of months back, I’m really impressed of the following:

iPhone is a force to be reckoned with in the enterprise, I finally can join the WPA enterprise network at work, and could browse Outlook web Access! this is quite handy, and was not available for me on other platforms .

Exchange is there and other features as well. Arabic support is excellent, and these are the features I care about the most on any mobile platform.

Being an old Palm OS timer, having a wealth of apps is an essential feature, and currently iPhone is unparalleled .

I know that Developers are flocking to Android in their droves, and that my next device may be an Android one, especially that I’m a Linux Geek, but by and large, I'm sure that iPhone is currently the best fit for my needs.

The only thing that I feel challenging, and I know there is a workaround for, is the Adobe Flash thing that is just inviting the wrath of everybody.

I just scratched the surface of the platform, that is I can’t give a sound concrete opinion about it, however I'm currently poking around with the tools; they're very easy to use. And I will try to writ another post after a couple of months In Sha Allah to see where I get on with the platform .

Managing 100s of Linux and Solaris machines with clusterit

2010-05-28T21:05:00.001+03:00

I’m copying this through Blog O’ Matty, I will post my test for the app as soon as I get time ! But since it’s important and want to postpone it.

“

I use numerous tools to perform my SysAdmin duties. One of my favorite tools it clusterit, which is a suite of programs that allows you to run commands across one or more machines in parallel. To begin using the awesomeness that is clusterit, you will first need to download and install the software. This is as easy as:

$ wget http://prdownloads.sourceforge.net/clusterit/clusterit-2.5.tar.gz

$ tar xfvz clusterit*.gz

$ cd clusterit* && ./configure –prefix=/usr/local/clusterit && make && make install

Once the software is installed, you should have a set of binaries and manual pages in /usr/local/clusterit. To use the various tools in the clusterit/bin directory, you will first need to create one or more cluster files. Each cluster file contains a list of hosts you want to manage as a group, and each host is separated by a newline. Here is an example:

$ cat servers
foo1
foo2
foo3
foo4
foo5

The cluster file listed above contains 5 servers named foo1 – foo5. To tell clusterit you want to use this list of hosts, you will need to export the file via the $CLUSTER environment variable:

$ export CLUSTER=/home/matty/clusters/servers

Once you specify the list of hosts you want to use in the $CLUSTER variable, you can start using the various tools. One of the handiest tools is dsh, which allows you to run commands across the hosts in parallel:

$ dsh uptime

foo1  :   2:17pm  up 8 day(s), 23:37,  1 user,  load average: 0.06, 0.06, 0.06
foo2  :   2:17pm  up 8 day(s), 23:56,  0 users,  load average: 0.03, 0.03, 0.02
foo3  :   2:17pm  up 7 day(s), 23:32,  1 user,  load average: 0.27, 2.04, 3.21
foo4  :   2:17pm  up 7 day(s), 23:33,  1 user,  load average: 3.98, 2.07, 0.96
foo5  :   2:17pm  up  5:06,  0 users,  load average: 0.08, 0.09, 0.09

In the example above I ran the uptime command across all the servers listed in file that is referenced by the CLUSTER variable! You can also do more complex activities through dsh:

$ dsh ‘if uname -a | grep SunOS >/dev/null; then echo Solaris; fi’

foo1 : Solaris

foo2 : Solaris

foo3 : Solaris

foo4 : Solaris

foo5 : Solaris

This example uses dsh to run uname across a batch of servers, and prints the string Solaris if the keyword “SunOS” is found in the uname output. Clusterit also comes with a distributed scp command called pcp, which you can use to copy a file to a number of hosts in parallel:

$ pcp /etc/services /tmp

services                   100%  616KB 616.2KB/s   00:00
services                   100%  616KB 616.2KB/s   00:00
services                   100%  616KB 616.2KB/s   00:00
services                   100%  616KB 616.2KB/s   00:00
services                   100%  616KB 616.2KB/s   00:00

$ openssl md5 /etc/services

MD5(/etc/services)= 14801984e8caa4ea3efb44358de3bb91

$ dsh openssl md5 /tmp/services

foo1 : MD5(/tmp/services)= 14801984e8caa4ea3efb44358de3bb91

foo2 : MD5(/tmp/services)= 14801984e8caa4ea3efb44358de3bb91

foo3 : MD5(/tmp/services)= 14801984e8caa4ea3efb44358de3bb91

foo4 : MD5(/tmp/services)= 14801984e8caa4ea3efb44358de3bb91

foo5 : MD5(/tmp/services)= 14801984e8caa4ea3efb44358de3bb91

In this example I am using pcp to copy the file /etc/services to each host, and then using dsh to create a checksum of the file that was copied. Clusterit also comes with a distributed top (dtop), distributed df (pdf) as well as a number of job control tools! If you are currently performing management operations using the old for stanza:

for i in `cat hosts`
do
    ssh $host 'run_some_command'
done

You really owe it to yourself to set up clusterit. You will be glad you did!”

How twitter helps in physical social networking

2010-05-08T17:57:00.001+03:00

Due to some dust storms, I was stranded in Malta airport yesterday, a free open wireless network was captured, and I was thinking, if any body is tweeting about this in the airport and to know more details about it.

Up to my surprise, only one person tweeted about this, I was thinking if I could meet and discuss some of the social aspects wit that person.

Hours passed by, and my Laptop battery drained and I decided to start the journey to look for a power outlet, I ended up with one socket with two outlets, and no chairs! I decided to set down and start utilizing this time to do something productive, back and forth, I asked the person beside me if he is using twitter, and he turns to be the guy tweeted about the event.

He turned to be the CEO of a software company helping and coaching youth on how to be on track for Web II services, from my chat with @billzimmerman,I understood he is also funding fresh grads for their projects after filtering.

This might have a potential for Libya, and this needs more thinking.

It’s interesting to see how twitter is helping cast networking not only on the web, but the other way around .

Red Hat Enterprise Linux 6 Beta Now Available

2010-05-08T16:12:00.001+03:00

If you didn’t hear it yet, Red Hat had announced its new major release to its customer yesterday evening.

Nothing impressive for me, however, we finally have RHEL6 on the stage !

How much time does it take to break your password?

2010-03-31T20:37:00.001+02:00

Source.

A new project called: Nuggets

2010-03-31T20:26:00.001+02:00

During the last month, I was thinking of a way to revive my blog.

I was thinking of the best thing different that I can provide given that I lurk quite a bit – Ehem… Using the Reader provided from a company called Google .

I happen to find many nice nuggets that are extremely useful, of which the most are in the form of Tables and charts.

I will start sharing these in a way that will ease the pain for some one who works from 8 to 5 every day, since this is my case.

At some point I believe I will start creating ones as well, and for all, posts will hold the tag: Nuggets .

Let’s see how we get on .

How To Defrag Your Mind In 5 Easy Steps

2010-02-01T00:20:00.000+02:00

How To Defrag Your Mind In 5 Easy Steps

This is really a nice source code I liked to share with you, I'm planning to modify it soon and let you know!

Who knew, that a source code would be written for mind defragment!!

A nice comparison on capacitive screens

2010-01-13T21:52:00.001+02:00

Allow me to give you a quick update, this is one of the latest comparisons on capacitive screens for the best of smart phones in the market.

It turns that iPhone is still the best, hmmm .

Read inside the picture for more detail.

To know more about capacitive screens:

Thinking to buy a new Smart Phone? Here you go!

2010-01-06T00:35:00.001+02:00

Please click on the image down below to enlarge.

Find the best cell phone plans and more graphics at BillShrink.com

All what I do is part of the top 50 Jobs in the US, what about you?

2009-10-15T13:32:00.001+02:00

I was surprised by an email forwarded by one of my colleagues that “Systems Engineering” is the best job in the US.

Yes, that was announced on CNNMoney recently and that does not stop there.. I found that I combine #1, #5 and #48 !!

Read on this article, and please let me know about you .

VMware Player can now create virtual machines!

2009-10-07T01:19:00.001+02:00

And finally, and as a result of the high-profile cat-and-mouse game between VMware and SUN Virtual Box it’s now possible to create VMs in a Beta Version.

Feature Highlights:

The ability to create Virtual Machines
Aero support for Windows 7 and Windows Vista guests!!!
OpenGL support for Windows guests (give Google Earth a try!)
New User Interface including a Virtual Machine Library
Windows 7 support (as a Host and Guest OS)
Automatically download and install the latest VMware Tools package
Multiple Monitor Support
Print from your VM without installing printer drivers. Virtual Printing courtesy of our friends at ThinPrint.
ALSA Sound support on Linux hosts enables multiple VMs to play "music" concurrently
VIX API support will let our coding fans write applications that can interact with their VMs

So if you're willing to roll your sleeves up, read on for download and installation instructions: http://communities.vmware.com/community/beta/player

5 Tips to Prevent Internet Addiction and Study More Effectively

2009-09-26T19:40:00.000+02:00

This post was spotted while delving through my Google Reader feed, it really describes what happens to all of us when we don’t plan + Get into the Web II world .

It’s mainly about study, but it quite applies to Work, and any thing else.

Leave you with the post:

5 Tips to Prevent Internet Addiction and Study More Effectively: "

If you are trying to study, but things like the Internet and instant messages keep distracting you, it can be very annoying. So to make yourself more productive when studying, here are a few handy tips to help you prevent that distracting Internet addiction and get what is needed done.

By the way, if you are reading this while you should actually be studying — relax, just a little read won’t hurt you.

Disconnect the Internet

Disconnecting yourself from the Internet may be one of the hardest things you can do (especially if you spend most of your day on it). The simplest thing you can do to prevent that kind of Internet addiction is to pull out your ethernet cable, switch off your wireless or turn off your modem. Some routers also allow you to set a time when you can use the Internet. The trick here is make sure it is hard to turn it back on. Therefore, if you want to do something really quick like check your email, hopefully you have enough strength in yourself to not turn the internet back on for one little task. If you do turn it back on, you may get an email which may waste more of your time.

TIP: If you have made a study schedule, makes sure you turn the Internet off when it is your study time.

If you can’t force yourself to turn it off, get someone to do it for you and make sure they have some measure to stop you turning the Internet back on.

Don’t Waste Time on the Internet

I spend a lot of wasted time on the Internet. This can mean logging into sites every 15 minutes to see if has been updated. I have to admit, I do this a lot. Gmail, Facebook, Myspace, Google Reader, I can’t believe I had time to write this up.

The trick here is to pace yourself and check the Internet once a day. Spend the rest of the day doing something else.

Create a Study Plan to Prevent Internet Addiction

Plan your week. Allocate time to each subject to study. Remember to include break times that allows you to surf the Internet, eat and watch TV. In other words, reward yourself for studying.

Work First, Plan Second

Get into the habit of having all your work for the week (or most of it) done before you start having fun, going out, playing computer games or browsing Youtube. By doing this, you know you can go out Sunday night with your friends instead of doing all the study you didn’t do. In other words, prioritize your tasks.

Study Smart

People tend to study in different ways. Some people like studying by themselves, others in groups or even while playing sports. OK, sports? Well if you lose a point (while playing tennis, for instance) your opponent asks you a question then you have to answer correctly, if you don’t, you’ll lose two points). By doing this, you can have fun, be social, and study at the same time.

Be in front of your studies from the beginning. Don’t fall behind. Read the topics for the week ahead beforehand (if you can) and write notes before the actual lecture. The advantages of doing this is that you can afford to fall asleep in the lecture if you had a late night, and it allows you to focus on things you had issues with or didn’t quite understand when taking the notes. Remember, be in front and not behind.

As soon as you get work to do, finish it straight away as soon as you get home, before you do anything else that could be distracting. This allows you to recollect of all the tasks you have to do and easily recap what you have learnt. If you wait a day or later on in the night, you may get tired, or get distracted by your friends ringing you up, or possibly forget what you had to do.

I hope these tips of helped or will help you study in the future. If you have other tips, or things that you have done to study effectively, please do share them with us”.

Intel Nehalm is now mainstream with a radical overhaul in architecture

2009-09-12T00:33:00.001+02:00

Intel finally brings its Nehalem architecture to its mainstream desktop PC line with today's Core i5/i7 and P55 chipset launch. In contrast to most previous launches, the chipset is actually a big deal this time around, marking as it does Intel's most radical overhaul of basic PC system architecture since the introduction of AGP.

Pre-Nehalm Era

Nehalm Core i5/i7

If you may have noticed, no more “North” and “South” bridges, only one ship called the “Platform Chipset” P55 and is now the only chipset besides the BIOS ship making Intel kind of analogues with AMD.

The GPU is now inside the CPU die .

Now the Question is, does that bring an added value in terms of performance?

In terms of Windows 7 and Gaming it is surprisingly worse according to the benchmarks !

Read on the details here on the Ars Technica article.

However the prior 5500 generation of Nehalm is bringing a performance boost of 500 times on the previous generation according to a white-paper from Intel, and 1000 times! in terms of virtualization performance if used in a special platform announced by an alliance of computing vendors including HP and Intel.

Waiting for other benchmarks for the Desktop platform specifically on Linux to see how it adds value and perform.

This is quite clear Oracle! Thanks .

2009-09-10T12:38:00.001+02:00

This is an advert that Oracle is placing in the Wall Street Journal on Thursday 10th September 2009. It has also hit many web sites, such as Yahoo Finance - Oracle page.

This might indicate that SUN SPARC and Solaris are not dead yet; however many big enterprises had already announced that they are phasing out SPARC/Solaris for the next version of there software packages.

IBM had unintentionally helped SUN and thus its future competitor: Oracle by buying: “Quick Transit” or “Transitive Corporation” which runs SPARC/Solaris binaries and applications including Oracle on Linux.

I have installed the Solaris version of Oracle 9 binaries for SPARC on RHEL 4.4 smoothly and as claimed, it worked even faster than Solaris on SPARC!

However, just one month after this, IMB acquired Transitive and stopped its production initially for 6 months. Then building it’s virtualization platform: PowerVM on it.

Now, PowerVM just helps you run Linux X86 apps on the Power Architecture of IBM, and that’s it!

Unless IBM releases this again for SPARC, it’d be doing good for SUN/Oracle.

Now let’s cross our fingers and watch if what proclaimed above will come true .

Red Hat Enterprise Linux 5.4, KVM and Xen

2009-09-04T18:35:00.001+02:00

It was a long time since I last wrote a blog post; however, if you may have noticed I was continuously updating my twitter feed with the latest technology news and hits especially in the Linux world –Hint: you might use that feed to catch-up with the stuff!

I was and still into many projects –Simultaneously- and that really affected my time allotted into geeking around in my small lab.

First off, let me tell you about one big thing: RHEL 5.4 is out! .

What does that represent? well, to me it’s a big change for people planning to have the RHCE credentials by Year End and also for people planning to start focusing on a virtualization technology to learn.

Read on the following article to know what I mean; In a nutshell, Redhat had showed interest to phase-out Xen -it’s default virtualization platform and replace it by KVM; heck, now KVM is the default Virtualization solution in RHEL 5.4 .

Now, I’m thankful that I didn’t invest much time into learning Xen, also, I’ll hold back to see the new virtualization material from Redhat; it’s a strategic time to start delving into KVM and investing time in learning its internals.

Libyana Net HSDPA 3G USB Modem- Exclusive Review

2009-07-08T00:34:00.001+03:00

Libyana is a libyan mobile phone company established in 2004; It is one of two mobile phone operators owned by the General Post and Telecommunication Company (GPTC) - Wikipedia.

It provides GSM 900 and GSM 1800 alongside 3G coverage.

A new service would be provided for the 1st time in Libya in Q3 2009, which is the 3G HSDPA coverage that is represented by the Libyana Net USB Modem.

At the time of this review, it’s not commercially rolled up yet, we’ve got our hands on one of these units and here is our verdict.

Price

Undetermined, rumors say that it’d be more than LYD300 for the personal use and higher for the business use.

What's Hot

USB means flexibility, Good software, Ease of use and straight forward fluid setup, works like ADSL in many areas.

What's Not

Slow in many standard 3G or GSM coverage area, limited and unknown full HSDPA coverage, bulky and the cover can be simply lost, it’s Expensive

The Final Word

The Libyana Net HSDPA USB Modem is flexible and works well if you are in HSDPA coverage. Unfortunately, it's limited to 5GB per month and its performance in regular GSM coverage areas isn't reliable for anything more than web browsing and email.

Detail

The Modem is a bit bulky for the 1st time you grab it, it contains a MicroSD card reader so that you can use it as your USB Pen Drive, and it has another slot for the currently only Data SIM Card, where you can download 5 Gigs of data monthly and use the LYD1 balance that you can charge later on.

As soon as you plug the USB drive, given that you have the auto-run for removable USB Storage device – which I don’t recommend any way, you’ll have the following prompt screen.

It’s one of the easiest setup for devices I have ever seen in my life if not the most, no single line of text or input is needed, my young brother could do that by him self, and I bet my grand mom can do that as well.

The setup will give you the option for Arabic or English installation.

Once you finish the series of “Nexts” you’ll have the application launched with a beautiful GUI.

The interface is providing a nice glance on the Transport Rate, Receive Rate, Amount of transported and received data, and finally the connection duration.

Smoke Test

My fist test was with an MP3 file that is 62M size, and here are the results:

Initial Transfer Rate: 51 kB/s
Available Bandwidth: 374.90 kbps
Lowest Transfer Rate: 27.3 kB/s
Average Transfer Rate: 31.4 kBs

Needless to say, this is the same performance of ADSL + the portability and the no need for a telephone line.

However, since the performance is based on coverage, we’ve done our sampling test on three areas:

Dhat Al-Imad Complex: Quite a poor signal by 08:30 AM, download rate is a bit better than the Dial-up connection, you tube streaming is a bit miserable .
Ben Ashour, Near Al-Mokhtar clinic, a decent connection, makes it possible to work.
Tajoura, the best performance near the tourist village of Andalusi, smooth audio streaming and YouTube performance, the test was done also indoors.
Zawia, since there is no 3G coverage in the city suburbs, the connection was nevertheless a better than all of the available means out there, that is, a bit better than the dial-up.

Now that this review is done, please let me know about your experience with this device as soon as you put your hands on.

Review Date

Tuesday, 07th of July, 2009

How to undelete any open, deleted file on linux / solaris

2009-03-03T20:53:00.001+02:00

Wow, I like that:

Chris Dew wrote up a neat trick on how to recover files if deleted on Linux, yet still open by a process.

This works on Solaris as well. =)

$:~:uname -a
SunOS somehost.com 5.10 Generic_127112-11 i86pc i386 i86pc

$:~:echo “sup prefetch.net folks?” > testfile
$:~:tail -f testfile &
[1] 17134

$:~:rm testfile
$:~:ls /proc/17134/fd/
0 1 2
$:~:cat /proc/17134/fd/0
sup prefetch.net folks?
$:~:cp !$ ./testfile
cp /proc/17134/fd/0 ./testfile
$:~:cat testfile
sup prefetch.net folks?

Again, it’s from the awsome: http://prefetch.net/blog/index.php/2009/02/25/how-to-undelete-any-open-deleted-file-on-linux-solaris/

Quality VS Quantity – Great Dashboard!

2009-03-03T20:31:00.001+02:00

I’ve stumbled upon this article within my Google Reader subscriptions, I think it really worths reading:

QUALITY vs quantity, UX process.

Check email ONLY:

10AM
1PM
4PM

Send any time
Set email to check every 3 hours.
NO email on evenings.
NO email on weekends.
EMERGENCY? = Use phone.

FOCUS 1-3 Activities max/day
LOG 1-3 Succinct status bullets every day on team wiki

MINIMIZE chat
MAXIMIZE single-tasking

OUT by 5:30PM
~No excuses~

Read on: http://lifehacker.com/5161561/simple-guidelines-for-workday-quality-over-quantity

When that file was deleted?!! Nice Tool for Linux

2009-03-03T20:27:00.001+02:00

It happens a lot when you just wish if you be able to track file deletions and manipulations on your file system to know the root cause of a specific problem.

Imagine if you get this output on your log file:

[21/Feb/2009 11:21:18] IN_CREATE /tmp/services
[21/Feb/2009 11:21:18] IN_CLOSE_WRITE /tmp/services
[21/Feb/2009 11:21:18] * /tmp/services is closed
[21/Feb/2009 11:21:25] IN_DELETE /tmp/services
[21/Feb/2009 11:21:25] * /tmp/services is deleted
[21/Feb/2009 11:21:35] IN_CREATE /tmp/foo
[21/Feb/2009 11:21:35] IN_CLOSE_WRITE /tmp/foo
[21/Feb/2009 11:21:35] * /tmp/foo is closed
[21/Feb/2009 11:21:46] IN_DELETE /tmp/foo
[21/Feb/2009 11:21:46] * /tmp/foo is deleted

So how can you get that?

There is a Linux utility called iwatch that can be downloaded from this url:http://iwatch.sourceforge.net/index.html

You simply trigger the command by: $ iwatch -v /tmp

And you get the output above.

You can also have that send the output to your mailbox:

$ iwatch -v -m 2luqman@luqmanux.com /tmp

Thanks to matty, who posted this tip at his blog and I used it here using his article, read on the full article here: http://prefetch.net/blog/index.php/2009/02/28/monitoring-file-activity-on-linux-hosts/

Red Hat Enterprise Linux 5.3 Officially released today

2009-01-20T22:24:00.002+02:00

The Red Hat Enterprise Linux 5.3 Release Notes note over 150 updates and upgrades, but here are a few key highlights:

Virtualization enhancements: Red Hat Enterprise Linux 5.3 supports larger x86-64 systems. The number of supported physical CPUs is increased to 126, while maximum memory is increased to 1TB. Virtual server CPU and memory limits have been increased to 32 and 80GB respectively – far higher than competing virtualization products. Additionally the per-guest limits for disks and network interfaces have also been increased. The performance and range of paravirtualized device drivers has been increased, enabling ever more applications to be deployed on virtual servers with near bare-metal performance.

Next-generation hardware enablement: The soon-to-be-released Tylersberg/Nehalem platform is the next-generation of Intel x86-64 hardware. Support for the virtualization and performance features provided by this processor combined with numerous optimizations have already demonstrated exceptional performance over previous processor generations in internal Red Hat testing.

OpenJDK: Red Hat is taking a leadership position in Red Hat Enterprise Linux 5.3 by shipping the first productized implementation of OpenJDK. OpenJDK in 5.3 has passed the full Java SE 6 TCK and is compatible with all applications written for Java SE 6 and previous versions. With the integration of OpenJDK, Red Hat Enterprise Linux 5.3 is the the first enterprise-ready solution with a fully open source Java stack when combined with JBoss Enterprise Application Platform.

Systemtap: This is an application development tool targeted at dynamically allowing applications to be monitored and diagnosed. With Red Hat Enterprise Linux 5.3 support for User Mode (i.e. application level) tracing and profiling is provided for the first time – adding to the Kernel Mode support that was provided in earlier releases. The operative word here being “dynamically,” as the key benefit of Systemtap is the ability, on-the-fly, to add instrumentation, probe points, and memory tracking to running applications. This is key to enable identification and resolution of issues in live environments. Extremely powerful — both for user and kernel space.

Power management: With “green IT” gaining increasing focus, we have been implementing a progression of power-saving enhancements in every update of Red Hat Enterprise Linux. 5.3 is no exception, with improved handling of low-level power management low-power sleep states.

Disk encryption: Critical for laptop use, but also becoming increasingly important in server deployments (due to concerns with hardware disposal at the end of its lifecycle), Red Hat Enterprise Linux 5.3 includes full support for encryption of storage, either at the block level or file system level. Installer enhancements enable encryption to be configured at installation time, and includes support for the root and swap devices.

Red Hat News | Red Hat Enterprise Linux 5.3 Offers Customers New Features and Capabilities

Technorati Tags: Linux

The Ultimate Linux Reference Guide for Newbies

2009-01-16T23:53:00.002+02:00

During the course of your daily sys admin tasks, you definitely need to change IP addresses several times.

In RedHat/Fedora, the first tool that you will find easy to use is probably: system-config-network, then you’ll find your self using the command setup in cases you couldn’t manage to get into Run Level 5, days will pass by and you’ll find your self using ifconfig for this task, and then many tools available for this task.

But how about using the ifcfg command?

ifcfg eth0 del 192.168.0.1

This command takes eth0 down and removes the assigned IP 192.168.0.1

ifcfg eth0 add 192.168.0.2

This command brings eth0 up and assigns the new IP 192.168.0.2

[Originally posted on The Ultimate Linux Reference Guide for Newbies ]

Technorati Tags: Linux

PreCentral.net | all things Palm Pre

2009-01-16T23:08:00.001+02:00

Following the same trend of treocentral and other mobile devices portals, we now have two websites that are the 1st place to go for Pre info, these are:

PreCentral.net | all things Palm Pre

And it’s fellow brand-new webOS/Pre-related site:

http://webosareana.com

Just add these to your Google Reader subscriptions and stay tuned!

Technorati Tags: Palm Pre

Vi and Vim Macro Tutorial: How To Record and Play

2009-01-16T18:55:00.002+02:00

VI is beast, have you heard this before?

Many of you might be wondering why? this is one of the reasons:

Vi and Vim Macro Tutorial: How To Record and Play

[By SathiyaMoorthy at the http://www.thegeekstuff.com/ ]

Technorati Tags: linux

Safe Reboot Of Linux Using Magic SysRq Key

2008-12-11T20:05:00.003+02:00

Great, I was looking for kind of the STOP + A key in solaris for Linux and here it is.

I have summarized this great article to:

Safe Reboot Of Linux Using Magic SysRq Key: "First, you need to enable the SysRq key, as shown below.

echo '1' /proc/sys/kernel/sysrq

Following are the command keys available for Alt+SysRq+commandkey.
‘b’ - Immediately reboot the system, without unmounting partitions or syncing.

So: Alt+SysRq+b

We can also do this by echoing the keys to the /proc/sysrq-trigger file. For example, to re-boot a system you can perform the following.

echo 'b' /proc/sysrq-trigger

Perform a Safe reboot of Linux using Magic SysRq KeyTo perform a safe reboot of a Linux computer which hangs up, do the following. This will avoid the fsck during the next re-booting. i.e Press Alt+SysRq+letter highlighted below.

reBoot."

So: Alt+SysRq+B

The Macbook Experiment: Fedora 10 for Two Days | Tux Geek

2008-12-08T19:45:00.002+02:00

The Macbook Experiment: Fedora 10 for Two Days | Tux Geek:

Great article that mentions the main differences between Ubuntu and Fedora:

"

It uses RPM packaging and YUM for command-line package management, which some may find slower than Ubuntu’s apt-get and aptitude, but I didn’t notice that much of a difference.

Community is smaller, number of pages indexed by Google is smaller(31 mil compared to 75) but the forums are active and you will definitely get your questions answered.

It is considered leading-edge, because it always integrates the latest open-source technologies. (For example: OpenOffice 3.0, that didn’t made it to Ubuntu 8.10)

Comes only with FOSS. So you don’t have MP3 support out of the box.8-thumb The Macbook Experiment: Fedora 10 for Two Days

Because security is one of the most important features in Fedora, it has Security-Enhanced Linux(SELinux) which provides advanced security policies trough the use of Linux Security Modules(LSM) in the Linux kernel".

However, I'll add the following:

Fedora is Red Hat Based, Ubuntu is Debian based, and since I'm overly used to Red Hat Products, including rpm and Yum, this is my choice, and BTW, it's Linus Torvalds choice and distro! --According to Wikipedia- .

Fedora is more for Geeks, Ubuntu is more for Linux novices and starters, there is no clearer than the mandatory Sudo --I know there is workarounds to disable it- while in Fedora you're free to switch to root.

Read on the original article to know about how that works on a Macbook!!

Ubuntu or Fedora?

2008-12-06T22:50:00.001+02:00

Ubuntu or Fedora?: "One consideration when choosing between the two distributions is the amount of support that new, and seasoned, users can expect. Because both are open source community projects this is not a case of paying for support. Rather it comes down to the amount of support available online.

There is a strong case to suggest that Ubuntu wins this battle with ease. A simple search on Google for any Ubuntu support topics turns up tens of thousands - or even hundreds of thousands - of results. Typically, Fedora also has many thousands of results for the same search but it tends to be ten or 20 percent fewer than for Ubuntu.

In most cases, choosing between Fedora and Ubuntu comes down to personal preference, although Ubuntu's support and package management make it a contender for the best Linux distribution."

Open Source Windows - Free, Open-Source software for Windows XP and Vista

2008-12-03T02:02:00.001+02:00

I know this is not Linux nor Unix, but I've stumbeledupon this great OpenSource page.

Open Source Windows - Free, Open-Source software for Windows XP and Vista

Hands on: Fedora 10 review

2008-11-27T03:26:00.002+02:00

If you didn't download that yet, head into the nearest torrent. And here is the review for your disposal.

Hands on: Fedora 10 review | News | TechRadar UK

Hardware: USB 3.0 to Transfer 25GB in 70 Seconds

2008-11-14T19:44:00.002+02:00

Hardware: USB 3.0 to Transfer 25GB in 70 Seconds: "SB 3.0 will be unveiled next Monday, and so far the new specs for the protocol look incredible, promising 25GB transfers in a mere 70 seconds. To put that in perspective, the same transfer would take 13.9 minutes with the current USB 2.0 protocol and 9.3 hours on USB 1.0. Looks like the future of wired syncs and backups is bright and blazing."

Run Your Windows Partition Without Rebooting | Linux Journal

2008-11-14T00:04:00.001+02:00

Run Your Windows Partition Without Rebooting | Linux Journal

Run your Windows installation from Linux withour rebooting .. WOW!

A nice self explanatory Video.

50 amazing Ubuntu time-saving tips

2008-11-07T14:42:00.002+02:00

How to get the most from the world's favourite Linux distro

read more | digg story

RHEL 5.3 Beta Announced.

2008-10-31T14:15:00.002+02:00

DistroWatch.com: Put the fun back into computing. Use Linux, BSD.: "Red Hat is pleased to announce the availability of the beta release of 5.3 for the Red Hat Enterprise Linux 5 family of products. This beta release includes the following improvements: support for up to 126 CPUs in the x86_64 Hypervisor; support for up to 1 TB memory per host on x86_64; cluster mirror support (2-leg mirrors only); NetworkManager 0.7; updated graphics drivers; re-based CUPS (print server), now with full Kerberos support; initial implementation of userspace tracing; root and swap encryption support in the installer; hibernate / resume support with encrypted disks; SELinux enablement of new NetworkManager and audit functionality; re-based samba from 3.0.28 to 3.0.32 which supports Windows Vista...."

Linkedin's new application platform takes your résumé social

2008-10-31T11:57:00.002+02:00

Linked in now supporting apps as in Facebook, in case that you didn't try them, have a look right now!

Linkedin's new application platform takes your résumé social

What's Linkedin?

It's the social network for professionals.
LinkedIn has experienced both explosive growth and calls to open up like Facebook and MySpace. In a recent study by Nielsen, LinkedIn's 193 percent increase in users from 2007 to 2008 landed it in fourth place among the fastest-growing social networks in the US.

In case you didn't have my profile link: http://www.linkedin.com/in/luqmanux

UK is king of the Geeks in Europe | News | TechRadar UK

2008-10-31T11:34:00.001+02:00

UK is king of the Geeks in Europe | News | TechRadar UK: " According to RISC international which describes itself as 'one of the world's leading consumer behavior and trends consultancies', In the past the word made reference to people who were excessively absorbed in a specialist field but characterized by a certain lack of social skills", says Sharon Greene, Managing Director of RiSC International.

'Today, driven by the social aspects of the Internet, the Geek has fine-tuned social skills. Today, the Geek is cool.

'In a society where 'Information Overload' has become an everyday reality, he or she is a valued resource, a shortcut through the information fog to in‑depth knowledge, the person people turn to when they need help with technological problems or buying decisions."

Read the full article by clicking on the link above.

Seagate Barracuda: 1.5TB Hard Drive Launched

2008-10-26T21:38:00.001+02:00

Now I think that the 1 Tera disk is stable!

Seagate Barracuda: 1.5TB Hard Drive Launched

Mastering IPTables, Part 2 | Linux Journal

2008-10-17T23:30:00.001+02:00

Mastering IPTables, Part 2 | Linux Journal

This is part II in this interesting series, and it really deserves sharing out in here!

Mastering IPTables, Part I

2008-10-02T22:07:00.002+02:00

Linux comes with a powerful firewall built-in, although the interface can be a little intimidating. This is the first in a multi-part tutorial on how to master basic and not-so-basic IPTables functionality and create the perfect firewall for your home network.

read more | digg story

Double your broadband speed with the BT I-Plate

2008-10-02T14:07:00.003+02:00

Double your broadband speed with the BT I-Plate Tool that costs just £12 and improves broadband speeds forever.

One week on though and we have to say we're mightily pleased. We're now averaging 1.4Mbps (that's over a three-fold increase) and our results are encouragingly consistent.

: TechRadar

This is my next "buy" gadget for the end of this year .

read more | digg story

Convert RHEL4 iso images to one consolidated DVD

2008-09-28T02:11:00.003+02:00

This is a quick hack that will create a bootable DVD iso of a Red Hat Linux Distribution. This is most importantly relevant to RHEL which is only distributed from Redhat as a normal CD-ROM image. This is also useful for any other Redhat distribution that is ISO Linux based.

This hack is a script written by Chris Kloiber that is fed either a directory containing the downloaded iso files, or a directory containing the "RedHat", "isolinux", and "images" directories.

Since RHEL4 is the certified Linux distribution for many production applications for the time being, and since RHEL4 doesn't have a DVD edition, This scriptcan be used to consolidate the the five iso images into one DVD image.

Here are the steps:

1- Ensure that you have enough space that is 3X the distribution size at least.

2- Ensure that the script has the execution flag set.

# chmod u+x mkdvdiso.sh

3- Usage: mkdvdiso.sh source /destination/DVD.iso

The 'source' can be either a directory containing a single set of isos, or an exploded tree like an ftp site.

4- The script will start doing its job, after a while, may be 5 minutes, viola! The /destination/DVD.iso is ready.

5- You can- afterwards- burn that DVD iso image using growisofs command or k3b.

# growisofs -dvd-compat -Z /dev/dvd=/destination/DVD.iso

The advantage is that you can now install RHEL by setting the install options and leaving without the need to insert the next CD and without the time wasted if you ever forget to insert the next CD for quite some time.

If you came across the situation where the Network PXE install is not working due to the kernel that is not recognizing the network interface driver, this is the solution but alongside the kickstart file from a USB pen drive to perform the complete flexible rock solid unattended installation.

Download the script from here: http://mirror.centos.org/centos/build/mkdvdiso.sh

Complete Kickstart: How to Save Time Installing Linux | Linux Magazine

2008-08-30T21:18:00.001+02:00

I have written a complete guide for setting-up a PXE server for RHEL4, This guide from the Linux Magazine will show you how to make it for RHEL5 .

The main difference is that the netboot.rpm package is not available for RHEL5 although it's referred to in the Redhat Documentation!

However, this guide will describe how to do every thing manually without using the GUI at all.

It's from the CISCO Labs, And it's really a great find!

Enjoy your time.

Complete Kickstart: How to Save Time Installing Linux | Linux Magazine

How to mount an ISO image in Solaris

2008-07-17T14:35:00.004+03:00

While it's quite simple to loop mount an iso image in RHEL, in Solaris you need the following two steps:

lofiadm -a /path/to/iso/file.iso

mount -o ro -F hsfs /dev/lofi/1 /cdrom

If you got stuck at this one day, that is your iso file that is not a block device.

How to set up a PXE-Boot Server For RHEL 4.4

2008-07-16T12:01:00.009+03:00

Automation is a hot topic for computer systems engineers, since they usually work for large service companies to frequently set-up, upgrade and migrate operating systems.It’s a good practice to have automation techniques in a fairly small company, where you only maintain ten machines, but it turns to be a must in large systems with hundreds to thousands of machines.

In this how-to we'll shed the light on the step-by-step procedures of creating a PXE server for RHEL 4.4 AS/ES/WS.

1.4 PXE-Boot and TFTP

1.4.1 What you need

A PXE enabled machine with an RHEL 4.4 recognized network interface, RHEL 4.4, Network Switch other than the corporate network since this setup incorporates a DHCP server that may conflict with the company’s DHCP server. Network Cables, Note that you can eliminate the need for network cables and other hardware client machines, if you’re using this for a virtualized environment, VMware Desktop, Server, Infrastructure and Xen.

You need to have the following packages especially if you’re usingthe WS version:

1- system-config-netboot-0.1.40-1_EL4.i386.rpm

2- system-config-kickstart-2.5.16-2.src.rpm

These packages are for RHEL 4 32 bit, you can easily have the 64 bit version from the web, I always use www.filewatcher.com for this purpose.

The first package is mandatory for the PXE process to take place, it includes the syslinux binaries by default.

The second, is the kickstart graphical configurator, I find this utility pretty much handy perfect the automation process.

1.4.2 Prepare your installation media

The installation media should be available as an NFS, FTP or HTTP image, I prefer the HTTP one, and this is the one illustrated here.

If you have the RHEL 4 DVD, it’s not necessary that you copy it’s contents to the PXE server, you can loop mount it using the:

Mount -o loop /media/cdrecorder /any/mount/point/path/you/create

However, if you have the cd’s, you have to copy them into /any/mount/point/path/you/create let’s that it’s /local_disk/RHEL4U4:

Mount /media/cdrecorder && cp --reply=no /media/cdrecoder/* /local_disk/RHEL4U4 && eject

You repeat this step for the five cd’s using the up arrow in the keyboard.

1.4.3 Setup a static network template for the PXE server

Our PXE server will be joined into a new network, since our PXE server is also a DHCP server and we don’t want it to conflict with the corporate network, the new network address is: 192.168.0.0 , our PXE server new address would be 192.168.0.2 .

We don’t want that change to be permanent, and that’s why we’re making this template:

DEVICE=eth0

BOOTPROTO=STATIC

ONBOOT=no

TYPE=Ethernet

IPADDR=192.168.0.2

NETMASK=255.255.255.0

GATEWAY=192.168.0.1

We save it with this name: ifcfg-eth0.static at: /etc/sysconfig/network-scripts

1.4.4 Setup the web server to serve this installation directory

Apache is the default web server for RHEL. To configure apache you need to edit: /etc/httpd/conf/httpd.conf and add the following:

Options Indexes

AllowOverride None

Alias /linux /local_disk/RHEL4U4

1.4.5 Setup the DHCP server

To create a Linux DHCP server you need to place this file as: /etc/dhcp.conf

ddns-update-style interim;

#ddns-update-style ad-hoc;

#authorative;

ignore client-updates;

subnet 192.168.0.0 netmask 255.255.255.0 {

# --- default gateway

option routers 192.168.0.1;

option subnet-mask 255.255.255.0;

#option nis-domain "domain.org";

option domain-name "luqmanux.net";

# You can replace the domain-name with any thing you like. In my case it’s #luqmanux.

option domain-name-servers 192.168.0.1;

option time-offset -18000; # Eastern Standard Time

# option ntp-servers 192.168.1.1;

# option netbios-name-servers 192.168.1.1;

# --- Selects point-to-point node (default is hybrid). Don't change this unless

# -- you understand Netbios very well

# option netbios-node-type 2;

#range dynamic-bootp 192.168.0.10 192.168.0.254;

range 192.168.0.10 192.168.0.254;

default-lease-time 3600;

max-lease-time 4800;

# we want the nameserver to appear at a fixed address

#host ns {

# next-server marvin.redhat.com;

# hardware ethernet 12:34:56:78:AB:CD;

# fixed-address 207.175.42.254;

#}

allow booting;

allow bootp;

class "pxeclients" {

match if substring(option vendor-class-identifier, 0, 9) = "PXEClient";

next-server 192.168.0.2;

filename "pxelinux.0";

}

}

1.4.6 Setup the TFTP server

Edit the /etc/xinetd.d/tftp file to make sure that TFTP is enabled. If you’re advanced enough you can look for other options to edit.

service tftp

{

disable = no

socket_type = dgram

protocol = udp

wait = yes

user = root

server = /usr/sbin/in.tftpd

server_args = -s /tftpboot

per_source = 11

cps = 100 2

flags = IPv4

}

Restart the xinetd services for your changes to take place.

Service xinetd restart

A /tftpboot directory will be created with a set of default files.

1.4.7 Setup the Syslinux PXE server

The PXE/syslinux server can be setup manually, that comes handy since it provides the power to configure any Linux distribution for the PXE process, but it’s not that easy, Red hat provides us with great tools for this all included alongside with the syslinux binaries, that package is: system-config-netboot , once installed you simply apply this command:

System-config-netboot &

The network installation and diskless environment application will launch, you just need to go to Configure, then Network installation.

The network installation and diskless environment application

Network installation global option

You then click on add. Down below, you see the network installation dialog where you set you PXE server options.

The operating system identifier is how you need this image to be called in the operating system menus at the client machine that you’re going to install, the same applies for the description, this is done for RHEL 4 the Workstation edition.

The installation protocol is of course through HTTP since we’ve already configured the Apache server to serve the installation through HTTP.

It’s recommended to configure a kick-start file, but not necessary. If you’ve already your kick-start file point to it’s location in the kick-start box. Since we’ve aliased to the installation directory with /linux in the apache configuration file, we can simply put our kick-start file there: http://192.168.0.2/linux/ks.cfg

According to our template the IP Address of our server would be: 192.168.0.2

And the location of the installation directory: /linux

Now return to the main window of the network installation application and open up the file menu the click on new.

From the dialog above, you have a very powerful utility; you can either serve the installation directory to a set of specific clients or for the whole subnet.

Here we serve our installation for the whole 255.255.255.0 subnet. And we specify which operating system we’re serving, We ask our clients to generate a kick-start file and keep it, if we don’t specify any path it’ll be kept under the default path which is the home directory for the root user. Press OK.

And you’re done configuring the PXE server.

1.4.8 Final touches

Now that you have setup all the Linux servers necessary for this operation, disconnect you PXE server from the corporate network and connect it to your switch along with the client machines, after that, you need to:

1- Load the static network template:

ifdown eth0

ifup eth0.static

Verify that the new address has been set using the ifconfig tool.

2- Start the apache web server:

Chkconfig httpd on

Service httpd start

You can test that by pointing your browser to the local host:

Firefox localhost

Links localhost

3- Start the DHCP server:

service dhcpd start

1.4.9 Starting the PXE installation

Now that every thing is ok and setup, boot up the client machines, you’ll find that they are booting through TFTP and displaying a menu of the available operating systems to choose from, you choose the appropriate operating system and every thing else should run automatically if you’ve configured the kick-start file.

Top 10 RHEL Linux network troubleshooting tips

2008-06-17T11:35:00.005+03:00

These are general tips from my daily practice . . quite handy to figure out what's the problem with nework in Linux (RHEL).

It has saved me a big deal of time each time I go around deploying it.

Here we go:

1- First check that your interface is enabled:

Type it merly without the -a.

Typically ifconfig will show you enabled interfaces, so that you're sure that your network adapter is enabled at the first place.

2- ping to the loop back address, to make sure there is no internal problem.

If no response restart the interface:

If the problem persists check the network settings.

3- Once you're done with pinging to the loopback address, ping to your own real IP address:

Replace X with your real IP.

4- If there is a problem, it might be physical, most of the time the cable it self is NOT connected.

If your enabled interface is eth0, the prior command is OK for you. The last line of the command will have in the output:

Link detected: yes

5- If the link is not detected, please plug the network CABLE! or change it.

6- I wont forget to say, that having a small 4-port switch two network cables and a tester is pretty much handy when you need to isolate the problem, is that from the machine it self, the cables or the switch it self?

All of those techniques had saved me quite a lot of times.

7- Of course checking the gateway settings in /etc/network and /etc/sysconfig/network-scripts/ifcfg-eth0
And checking DNS settings in /etc/resolv.conf will put you in the right track for solving network problems, you can use:

And:

Alongside:

8- Check the firewall, better shut it down to test:

9- Change the network plug if the server has more than one network plug.

10- Check for possible bonding driver problems if network bonding is enabled.

ls or the ll command?

2008-06-15T22:38:00.006+03:00

Lets start our journey with the most basic command on any Unix ever, the ls command.

When I speak about something, I mean the practical part of it that I've been practicing for a while.

Regarding the ls command, I confess that I had to give up using it on Linux on it's basic format for a much better one, I'm using an advanced format that I've seen pretty much useful in many situations.

That format is:

ll is an alias in most Linux distributions that stands for:

So, instead of typing ls -l all the time, you just type: ll .

What does ls -l or ll do any way?

If you came across the file system of Linux, you already know the story of file permissions and modification, access and write dates, you must have known the other stuff that is only displayed using the long listing mode which is ls -l or ll.

What about the htr?

h Stands for: Output in human readable format, the size for example would be in K or gigs or Tera accordingly.

t Sort most recently modified last. So you just look up to see the newest file in a directory.

r Reverse the sorting order, So you just look down to see the newest file in a directory.

So, This is my two cents using the ls command.

P.S: You can add the z option to see the SElinux contexts.

Why I'm here?

2008-06-14T00:08:00.007+03:00

Either you've been googling for some nix stuff, or palm OS thingies. Or you've heard about the upcoming and long time promised: Luqmanux distribution, don't worry, at least for quite some time you wont find it here, but you know?

Here you go,

A Computer Systems Engineering Blog?

Yup. But in the scope of my experience in systems engineering and analysis. yet focusing on Linux, specifically the RHEL one. But you'll find this Blog useful for other OSs such as Unix: Solaris and Palm OS and . . . e.t.c.

I'll have other soft skills posts as well, that'll foster a good looking, yet robust systems engineer or Analyst.

Why should I stick with you?

Simply, don't stick. I'm not generating financial revenue out from this thing nor looking for a wide public acceptance. Hey, this is just to outline that sheds the light on this discipline based on my daily practice.

Joking . .

I think this is the only or one of the pretty much few computer systems engineering Blogs on the web II.

W . . ?

Sorry for the interruption, I don't have more time yet, my schedule is full, I'll tell you more about computer systems engineering, or siply: Systems Engineering later on.

# Echo "Here we are"
# init 0