Launch Terminal and be in the home directory to get started:

• Using emacs, nano, vi, or whatever your favorite text editor is to edit .inputrc, we’ll use nano for the walkthrough:

nano .inputrc

• Paste in the following three rules on unique lines:

set completion-ignore-case on
set show-all-if-ambiguous on
TAB: menu-complete

• Hit Control+O to save changes to .inputrc followed by control+X to quit
• Open a new Terminal window or tab, or type “login” to open a new session with the rules in effect
• Start typing a command, path, or something else and hit the Tab key to see the improvements firsthand