Commands by hectorlara (0)

  • bash: commands not found

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calculate the total size of files in specified directory (in Megabytes)
the command will calculate the size of hidden files

converts a directory full of source tarballs into a bzr repository so you can compare different versions easily

floating point operations in shell scripts
Calculator for shell. Similar performance and basic usage as 'bc', but with more advanced features. Not installed on most systems by default.

Take screenshots with imagemagick
Now try this. Ones you see small cross arrow, double click on any window you like to make a screenshot "selectively".

BackTrack Repos
Add the BackTrack repositories to your Debian based GNU/Linux distribution. Thanks to http://it-john.com/home/technology/linux-technology/add-back-track-4-repo-to-ubuntu/

get rid of lines with non ascii characters
found here: https://stackoverflow.com/a/9035939

Calculate days on which Friday the 13th occurs (inspired from the work of the user justsomeguy)
Friday is the 5th day of the week, monday is the 1st. Output may be affected by locale.

Go up multiple levels of directories quickly and easily.
Change to your taste. Much quicker than having to add 'cd' every time. Add it to your .bashrc or .bash_profile.

Tired of switching between proxy and no proxy? here's the solution.
Replace 10.0.0.0/8 with your largest local subnet. replace 10.1.1.123:3128 with your proxy information.. Note this only works with a proxy server configured for passive setup.. Now your firefox transparently proxy's stuff destined outside your network.. and Doesn't proxy stuff inside your network. as well as all your other favorite web applications. curl, wget, aria2 ect.

Identify long lines in a file
This command displays a list of lines that are longer than 72 characters. I use this command to identify those lines in my scripts and cut them short the way I like it.


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