OS X: Terminal Hints

Create zip file

// exclude os files
$ zip -r #archive#.zip #directory#

// exclude all hidden files
$ zip -r #archive#.zip #directory# -x "*/\.*"

Show hidden files

For MacOS 10.9+

$ defaults write com.apple.finder AppleShowAllFiles FALSE

Copy an existing SSH key

$ pbcopy < ~/.ssh/id_rsa.pub