Sub is a model for setting up shell programs that use subcommands, like git or rbenv using bash. Making a sub does not require you to write shell scripts in bash, you can write subcommands in any scripting language you prefer.
or did you know ~<tab><tab> - All Present Users on system from "/etc/passwd"
icli - Icinga Command Line Interface
A command line interface for redmine
A command line program to download flash videos
Debian/Ubuntu Tips & Tricks
Keychain is a script that provides some automation around the task of sharing a long-running ssh-agent between processes.
If PDF is electronic paper, then pdftk is an electronic staple-remover, hole-punch, binder, secret-decoder-ring, and X-Ray-glasses.