Also, if OP is new, they may not yet be aware of aliases and functions. Generally you’d out those in a ~/.bashrc file that gets automatically executed when a terminal starts. They’ll allow you to save a more complex command as a really simple one. And particularly can be useful when things you want to run are in unusual directories. Eg, maybe you have a git repo somewhere that contains some project you spend most of your time on, so you could have an alias that just cd’s you to it’s directory. Git also has its own way of doing aliases and that’s really nifty for the more complicated git commands (or the more commonly used, like st for status).