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Regenerate the /etc/mtab file

kill a process(e.g. conky) by its name, useful when debugging conky:)

Rename files in batch

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.

Get absolut path to your bash-script
Another way of doing it that's a bit clearer. I'm a fan of readable code.

Android PNG screenshot
Works with *rooted* Android devices. 400x800 are the screen dimensions of a typical handheld smartphone.

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"

Increase mplayer maximum volume
use '0' and '9' to increase/decrease volume. this is useful on laptops with low speaker volume.

Get the size of all the directories in current directory

Get HTTP status code with curl


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