Commands by mogoh (3)

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guitar synthesizer in one line of C
outputs a f=220Hz guitar string sound (fifth string A) needs ALSA

Watch active calls on an Asterisk PBX
Only the number of calls nothing else.

Converts to PDF all the OpenOffice.org files in the directory
Requieres unoconv (debian package)

grab all of google IPv4 network blocks

Make changes in .bashrc immediately available

A signal trap that logs when your script was killed and what other processes were running at that time
trap is the bash builtin that allows you to execute commands when the current script receives a particular signal. Uses $0 for the script name, $$ for the script PID, tee to output to STDOUT as well as a log file and ps to log other running processes.

urldecode with AWK
Fast and simple awk urldecoder! Note: Parameter -n is specific to GNU awk

list any Linux files without users or groups
suspicious/anomalous ownership may indicate system breach; should return no results

(Debian/Ubuntu) Discover what package a file belongs to
Works similar to dpkg -S, but uses the locatedb and is thus inarguably a lot faster - if the locatedb is current.

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"


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