change the terminal title dynamically in X11

I was actually looking for this for quite sometime. Some years back in my bashrc was the proper setting for setting the terminal title when I did a cd, and I had completely forgotten how to do it. So today I searched quite a few commands the environment variables for doing the same and found it again.

Here it is (Just put this in your bashrc or bash_profile):

export PROMPT_COMMAND=’echo -ne ”\033]0;`pwd`”; echo -ne ”\007”’

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The document editor that is revolutionary and breaking the typewriter paradigm.

Today, I thought I will try something different for word processor requirements, for non-text files. For text  files, vi rocks for me 🙂

So, I tried LyX, here is the description of the editor:

Description: LyX is a modern approach to writing documents which breaks with the

obsolete ”typewriter paradigm” of most other document preparation

systems.  It is designed for people who want professional quality

output with a minimum of time and effort, without becoming

specialists in typesetting.  The major innovation in LyX is WYSIWYM

(What You See Is What You Mean). That is, the author focuses on

content, not on the details of formatting. This allows for greater

productivity, and leaves the final typesetting to the backends

(like LaTeX) that are specifically designed for the task.  With

LyX, the author can concentrate on the contents of his writing, and

let the computer take care of the rest.

<img src="file:///tmp/moz-screenshot.jpg" alt="" />

using cscope with vim

Here&#8217;s the best of the two links that I found with <a class="zem_slink freebase/en/google" title="Google" rel="homepage" href="http://google.com">Google and <a class="zem_slink" title="Bing" rel="homepage" href="http://bing.com/">Bing combined out of lots of links that I think can help you understand how to use cscope with vim, if you dont know already.

<a href="http://cscope.sourceforge.net/cscope_vim_tutorial.html">http://cscope.sourceforge.net/cscope_vim_tutorial.html
<a href="http://www.faqs.org/docs/ldev/0130091154_242.htm">http://www.faqs.org/docs/ldev/0130091154_242.htm

Sendmail host map failure issue with sendmail.

I was having this issue for long time with sendmail and not getting time to fix this. Finally today I found the solution.
<span style="font-weight: bold;">define(`confBIND_OPTS&#8217;, `WorkAroundBrokenAAAA&#8217;)dnl
Add the above line in the sendmail.mc file and rebuild sendmail.cf.

Done. Quite simple but really took some time for me to fix.<span style="font-weight: bold;">
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Display the output of a command from the first line until the first instance of a regular expression.

| perl -n -e 'print "$_" if 1 … /«a class="zem_slink freebase/en/regular_expression" title="Regular expression" rel="wikipedia" href="http://en.wikipedia.org/wiki/Regular_expression">regex>/;# This <a class="zem_slink freebase/en/command_line_interface" title="Command-line interface" rel="wikipedia" href="http://en.wikipedia.org/wiki/Command-line_interface">command line will display the output of , from the first line of output, until the first time it sees a <a class="zem_slink freebase/en/pattern_matching" title="Pattern matching" rel="wikipedia" href="http://en.wikipedia.org/wiki/Pattern_matching">pattern matching .

Finding all the executables/binary in Linux rpm based distro.

I have been thinking about this for quite sometime now, how to find all the executables on the linux system. One of the way is to do a &#8221;ls&#8221; on all the directories in the PATH variable. But that will not list the executables that are outside of the PATH. So, I wrote this one liner :

rpm -qal |agrep &#8221;bin\/&#8221; > all_execs

This will list all the files in the Linux system in bin or sbin directory and that should be pretty much all the binaries in the system.

Fedora 12 demonstrates sandbox for desktop applications

<a href="http://blog.amit-agarwal.co.in/category/linux/">Bookmark this category
Security-Enhanced Linux (SELinux) specialist and Red Hat developer Dan Walsh has souped up the security mechanisms in Fedora and SELinux by adding a desktop sandbox which he&#8217;s calling “sandbox -X”. Users can run desktop applications of their choice inside his sandbox, which then protects the underlying system from any possible damage.

A browser started inside the sandbox is unable to damage the host system.
SELinux extends the standard Unix privileges concept to add a role-based privilege model which, in principal, allows a user to forbid a PDF viewer from, for example, sending email. Currently, however, SELinux is mainly used to wall off server services.
<a HREF="http://www.h-online.com/security/Fedora-12-demonstrates-sandbox-for-desktop-applications–/news/114298">read more <table CELLSPACING="0" CELLPADDING="0" WIDTH="100%">