A very quick hack that I’ve found very useful over the years – an alias lets you rename a command, a set of commands, etc.
For example, the ALSA command-line volume control interface, alsamixer, is much more memorable as salsamixer:
Just stick that in your ~/.bashrc file, run a source ~/.bashrc (or log out and back in) and you can run the command salsamixer. Neat, no?
Another super handy one for debian/ubuntu/mint users:
alias sagi='sudo apt-get install'
Again, append that to your ~/.bashrc file. Now, you can install software with 16 less keystrokes: