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Pretty Print a simple csv in the command line
Splits the input based on commas and prints it in a nice column format. This would not work for CSV rows that have "," between quotes or with newline characters. Use only simple simple csv files.

Which processes are listening on a specific port (e.g. port 80)
swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

merge vob files to mpg

Coping files, excluding certain files
Preserve file structure when coping and exclude some file o dir patterns

Enable color pattern match highlighting in grep(1)
This will affect all invocations of grep, even when it is called from inside a script.

Clear mistyped passwords from password prompt
Type ^u at password prompt to clear a mistyped password.

analyze traffic remotely over ssh w/ wireshark
Please check out my blog article on this for more detail. http://jdubb.net/blog/2009/08/07/monitor-wireshark-capture-real-time-on-remote-host-via-ssh/

Set laptop display brightness
Run as root. Path may vary depending on laptop model and video card (this was tested on an Acer laptop with ATI HD3200 video). $ cat /proc/acpi/video/VGA/LCD/brightness to discover the possible values for your display.

Verify MD5SUMS but only print failures
All valid files are withheld so only failures show up. No output, all checks good.

Change gnome-shell wallpaper


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