regular expression, sed and grep tuturials and tricks.

Simply a great one page article on sed and use of regular expressions.

<a href="http://almirkaric.com/2009/07/15/sed-and-grep-tips/" target="_blank">http://almirkaric.com/2009/07/15/sed-and-grep-tips/

Enhance photos quickly with GIMP

Okay today I will show you how to enhance or make the photo look better with GIMP. Digital photos are good but can be made better with GIMP. I will take you step by step with the process. There are many other things that you can do but I will cover only basic stuff. So here we go.

Take a photo of your choice.

<img class="size-full wp-image-503" title="Monkey" src="http://blog.amit-agarwal.co.in/wp-content/uploads/2010/08/dscf5962.jpg" alt="Monkey" width="387" height="542" />

Using tput to save, clear and restore the terminal contents

Using tput to save, clear and restore the terminal contents $ tput smcup; echo &#8221;Doing some things…&#8221;; sleep 2; tput rmcup Very useful for interactive scripts where you would like to return the terminal contents to its original state before the script was run. This would be similar to how vi exits and returns you to your original terminal screen.

Save and clear the terminal contents with:

tput smcup

Linux command to repeat a string n times

There are more than one situation where you wished that there was a simple way to print a character n number of times. At least I face that quite often, especially when you want to print a menu. I found this post today which has pretty good solution and also the way how it works :
<a href="http://superuser.com/questions/86340/linux-command-to-repeat-a-string-n-times">http://superuser.com/questions/86340/linux-command-to-repeat-a-string-n-times

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Change pidgin status from the command line

$ purple-remote "setstatus?status=away&message=AFK" Thanks for the comment oshazard, i wasn&#8217;t aware of purple-remote existence.

• <a href="http://www.commandlinefu.com/commands/view/4554/change-pidgin-status">View this command to comment, vote or add to favourites
• <a href="http://feeds2.feedburner.com/commands/by/unixApe">View all commands by <a href="http://feeds2.feedburner.com/commands/by/unixApe">unixApe

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by David Winterbottom (<a href="http://codeinthehole.com">codeinthehole.com)

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URL: <a href="http://feedproxy.google.com/~r/Command-line-fu/~3/Ky02xAVnP7w/change-pidgin-status">http://feedproxy.google.com/~r/Command-line-fu/~3/Ky02xAVnP7w/change-pidgin-status

Teaching Kids Programming with Free Programming Languages

<a href="http://blog.amit-agarwal.co.in/category/linux/">Bookmark this category
Teaching Kids Programming with Free Programming Languages Tech Source From Bohol: &#8221;Most of these languages are graphics-based that makes them fun and attractive for young ones or even for adults who are absolute beginner in programming. So enjoy and teach your kids programming with these free programming languages.&#8221;

URL: <a href="http://linuxtoday.com/news_story.php3?ltsn=2009-10-02-010-35-OS-SW-DV">http://linuxtoday.com/news_story.php3?ltsn=2009-10-02-010-35-OS-SW-DV

wmctrl – window control manager

What is <a class="zem_slink freebase/en/wmctrl" title="Wmctrl" rel="wikipedia" href="http://en.wikipedia.org/wiki/Wmctrl">wmctrl?

wmctrl  is  a  command that can be used to interact with an X Window manager that is compatible with the EWMH/NetWM specification.  wmctrl can query the <a class="zem_slink freebase/en/window_manager" title="Window manager" rel="wikipedia" href="http://en.wikipedia.org/wiki/Window_manager">window manager for information, and it can request that certain window management actions be taken.