Commands by maffo7 (2)

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Monitor cpu in realtime.

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"

Remove duplicate rows of an un-sorted file based on a single column
$F[0] filters using first word. $F[1] - 2nd, and so on.

Optimize PDF documents

Convert CSV to JSON
Replace 'csv_file.csv' with your filename.

list files recursively by size

Show the command line of a process that use a specific port (ubuntu)

Calculate sum of N numbers (Thanks to flatcap)

get a random 0/1, use it for on/off, yes/no
use it to add a random boolean switch to your script

external projector for presentations
i spent way too many hours trying to fiddle with /etc/X11/xorg.conf trying to hook up various external projectors. too bad i didn't know this would solve all my problems.

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