Linux xdg-open — replacement for start in windows

if you want to open any document with the default document handler from the bash prompt or command prompt in linux then the simplest way to do that is use ”xdg-open”.

This can also be used in bash scripts to allow users to select which document to open without worrying about if a particular application is installed or not. Example could be where you have list of documents in the current directory (same kind or of different format.) and you want the user to select the document. In such a scenario you can take the user input for the filename and user ”xdg-open filename” to open the file irrespective of the file type or worrying about if xpdf is installed or abiword is installed or not.

Using nullglob and dotglob in bash scripts.

<a href="http://www.cyberciti.biz/faq/bash-shell-check-for-any-mp3-files-in-directory/">Use BASH nullglob To Verify *.c Files Exists or Not In a Directory has a nice explanation on nullglob and dotglob.

On screen display of a command

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delay: 2d On screen display of a command. $ date|osd_cat This is very useful if you need to show someone some text from a distance. (Like someone standing over your shoulder…)

I&#8217;d recommend aliasing it to something like:

alias osd_cat=&#8221;osd_cat -o 400 -s 8 -c blue -d 60 -f osd_cat -f -*-bitstream vera sans-*-*-*–200-*-*-*-*-*-*-*&#8221;

xosd is the utility that provides osd_cat.

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Get list of git repositories from command line.

Earlier I had posted a small blog on teamgit. The problem still is that you have to manually go to the git.kernel.org page and get the list of the repo&#8217;s that you can download. How about a command line to get the same. Here&#8217;s one:

wget -O – http://git.kernel.org |grep &#8221;class=.list.&#8221; |grep -v title|awk -F&#8217;>&#8217; '{print $3}&#8217;|sed &#8217;s/<\/a//&#8217;

Output will be like this:<div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">linux/kernel/git/ghaskins/linux-2.6-hacks.git