Commands by alexfoo (2)

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Watch active calls on an Asterisk PBX
This handles when you have a single call or channel. Other commands will strip out the result if there is a single channel or call active because the output changes the noun to be singular instead of plural.

bash find function
basic find implementation for systems that don't actually have find, like an android console without busybox installed.

Sysadmin day date of any given year
Calculate the date of Sysadmin day (last Friday of July) of any given year

Print process run time, average CPU usage, and maximum memory usage on exit
Bash has a built-in time command which provides less functionality than the real time command. Thus we reference /usr/bin/time directly. Since the command isn't very easy to remember you could alias it to something like "cputime" or even just "time".

list files recursively by size

quickly backup or copy a file with bash
less symbols, tab completion. including # export SIMPLE_BACKUP_SUFFIX="_`date +%F`" in your .bashrc provides you to easily timestamp your files

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

Rename files in batch

most used unix commands

rename all jpg files with a prefix and a counter

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