Alias: this command helps you take a list of commands or a command  and changes it into a single command

cp: this command can helps you to copy files or directory

help: help is a command that can gives you a Manual with a list of commands

man: this command  gives a manual on a specific command that you wish to get info on

mkdir: this commands helps you to create a new directory

mv: this command moves files in the directory it can also rename a file

rm: this command can remove a file in the directory

whatis- this command tells you what commands do like how a dictionary gives us a meaning on words