aliases

An alias allows you to define a shortcut for longer commands.

# ~/.alias
alias c="clear"  # or ctrl+l
alias dc="docker-compose"
alias push="git push origin HEAD"
alias t="tree"
alias x="exit"

Load these aliases automatically when your terminal loads.

# ~/.bashrc
source "$HOME/.alias"

After making changes to ~/.alias it is necessary to load the updated settings.

$ . ~/.bashrc
# or
$ source ~/.bashrc

Or, restart your terminal.