Persistent Aliases

How

Open your shell configuration file: nano ~/.zshrc (or ~/.bash_profile for bash)
Add your alias on a new line: alias ll='ls -la'
Save and exit (in nano: Control + X, then Y, then Enter)
Run source ~/.zshrc to load the changes, or open a new terminal window

Try this

Add alias ..='cd ..' to your ~/.zshrc file, save it, then open a new terminal window. Type .. to go up one directory level.

Why it works

Teach your terminal once.