Understand Awk Variables with 3 Practical Examples

2010-01-28 1 min read Learning Linux

<a id="aptureLink_CLV4LbC1Dr" style="padding: 0px 6px; float: right;" href="http://gnuwin32.sourceforge.net/packages/mawk.htm"><img style="border: 0px none;" title="Mawk for Windows" src="http://blog.amit-agarwal.com/wp-content/uploads/img.zemanta.com/ph/400x270_WebClip" alt="" width="400px" height="270px" /> This article is part of the on-going Awk Tutorial and Examples series. Like any other <a class="zem_slink freebase/en/programming_language" title="Programming language" rel="wikipedia" href="http://en.wikipedia.org/wiki/Programming_language">programming languages, Awk also has user defined variables and built-in variables. In this article let us review how to define and use <a class="zem_slink freebase/en/awk" title="AWK" rel="homepage" href="http://cm.bell-labs.com/cm/cs/awkbook/index.html">awk variables. Awk variables should begin with the letter, followed by it can consist of alpha numeric characters or underscore. Keywords […]

statifier — Dynamic to Static

2010-01-24 2 min read Linux

<a href="http://statifier.sourceforge.net/">Homepage of statifier.

<span style="font-size: xx-small;"><span style="font-size: xx-small;">Statifier create from dynamically linked executables and all it’s libraries one file.
This file can be copied and run on another machine without need to drag all it’s libraries.

<span style="font-size: xx-small;"><span style="font-size: xx-small;">Dynamically linked executables are smaller then statically linked.
From the other side dynamically linked executables use shared libraries compiled in PIC (position independend code) which is slower than ”normal” one.

Short Information about loaded kernel modules

2010-01-24 2 min read Linux

There are couple of ways you can find the information on the <a class="zem_slink" title="Loadable kernel module" rel="wikipedia" href="http://en.wikipedia.org/wiki/Loadable_kernel_module">loadable kernel modules. All these would always involve calling <a class="zem_slink" title="Lsmod" rel="wikipedia" href="http://en.wikipedia.org/wiki/Lsmod">lsmod to get the loaded kernel modules and then calling modinfo to get the info on the loaded modules. I will show you with examples:

$ lsmod
Module                  Size Used by
cdc_acm                19616 0
vfat                    8744 9
fat                    41836 1 vfat
Continue reading

Copy temporary evolution images downloaded for messages

2010-01-21 1 min read Linux Photo

cd ~/.evolution
cd cache
cd http
find . -name ”*.jpg” -exec cp {} /tmp/newfolder \;

Simple to understand, so no explanation 🙂 <a name="more">

sed tutorial and help

2010-01-21 1 min read Linux

A very nice turorial and help <a href="http://sed.sourceforge.net/grabbag/tutorials/">here.

Useful link for grep

2010-01-16 1 min read Linux

<a href="http://lifehacker.com/398441/get-to-know-grep">http://lifehacker.com/398441/get-to-know-grep

Viewing log files without using vi or any other text editor

2010-01-16 1 min read Linux

This is quite useful for viewing files without opening them.. Saves quite a lot of time in viewing the logs 🙂

Want to see the first 5 lines of the /etc/passwd file? Pretty easy, just use the "head" command:

head -5 /etc/passwd

Want to see the last 20 lines of the /etc/passwd file? Again, pretty easy, just use the "tail" command:

tail -20 /etc/passwd

But what if you only want to see lines 10-15 of a given file? Neither the "head" nor the "tail" commands alone will do. Instead, use the "sed" command to print the range of lines you want to see:

Older posts Newer posts