Commands by maarten (8)

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commandlinefu.com is the place to record those command-line gems that you return to again and again. That way others can gain from your CLI wisdom and you from theirs too. All commands can be commented on, discussed and voted up or down.

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Install pip with Proxy
Installs pip packages defining a proxy

Find if $b is in $a in bash
Find if $b is in $a in bash

Number of CPU's in a system
this works for a Linux based system, other UNIX systems may have other way(s) to check the number of CPUs.

Display time of accounts connection on a system
Works on CentOS ad OpenBSD too, display time of accounts connection on a system, -p option print individual user's statistics.

Quickly display a string as Qr Code
Takes the first argument (string) and display a Qr code version of that.

lists files and folders in a folder
lists files and folders in a folder with summary.

Remove git branches that do not have a remote tracking branch anymore

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"

BASH: Print shell variable into AWK

List all files ever added in git repository


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