locate is a search tool for the command-line aswell for Mac OS X

$ cd /usr/local/bin
$ ln -s /usr/libexec/locate.updatedb updatedb

Restart the Terminal

Run command updatedb if it’s doesnt work add in command-line

export PATH="/usr/local/bin:$PATH"

to the .bashrc in your user Folder.

Run locate in your command-line on mac

$ locate filename