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Send your terminfo to another machine
I frequently use this trick to send my terminal settings to HPUX and older RHEL systems. This is due to the fact that terminfo support for rxvt-unicode (my preferred terminal app) does not exist on many older Linux and Unices.

Replace duplicate files by hardlinks

List commands with a short summary
Obviously, you can replace 'man' command with any command in this command line to do useful things. I just want to mention that there is a way to list all the commands which you can execute directly without giving fullpath. Normally all important commands will be placed in your PATH directories. This commandline uses that variable to get commands. Works in Ubuntu, will work in all 'manpage' configured *nix systems.

colorize sequences of digits
Credits go to Flatcap https://www.commandlinefu.com/commands/by/flatcap

Check if system is 32bit or 64bit

Find the package that installed a command

check site ssl certificate dates
remotely connects to an https site, fetches the ssl certificate and displays the valid dates for the cert

Find usb device in realtime
Using this command you can track a moment when usb device was attached.

Convert wma to mp3@128k
Convert all wma to mp3@128k with ffmpeg into directory.

Get your local IP regardless of your network interface
Shows only IP-addresses of ifconfig except 127.0.0.0/8. I fixed the script to work on more systems and configs short info /inet/!d; #grep inet /127.0/d; # grep -v 127.0 /dr:\s/d; # grep -v dr: s/^.*:\(.*\)B.*$/\1/ # remove everything exept between : and B

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