prompt full path on mac

nano .profile
Now type: export PS1=" "
Between the quotation marks, you can add the following lines to customize your Terminal prompt:

• \d – Current date
• \t – Current time
• \h – Host name
• \# – Command number
• \u – User name
• \W – Current working directory (ie: Desktop/)
• \w – Current working directory, full path (ie: /Users/Admin/Desktop)

So, let’s say you want your Terminal prompt to display the User, followed by the hostname, followed by the directory, the .bashrc entry would be:
export PS1="\u@\h\w$ "
which will look like:
Admin@MacBook~Desktop/$ "
Cool huh? You can also change the prompt itself to anything, it doesn’t have to be the $ sign, simply replace it with whatever else you’d like to use, : for example would be:
export PS1="\u@\h\w: "