Aliases are nothing more than keyboard shortcuts or abbreviations, and although they’re a bit limited, they’re great for simple commands. Edit the
nano ~/.bash_profile file and add your alias, save and restart and boom, shortcuts!
alias code="cd /Users/jameswilliams/documents/repos"
Symbolic links for applications.
Use applications more easily from the command line.
ln -s /Applications/SourceTree.app/Contents/Resources/stree /usr/local/bin/
ln -s "/Applications/Sublime Text.app/Contents/SharedSupport/bin/subl" /usr/local/bin/subl