Show last two directories of pwd in BASH prompt

Problem: Show current directory and one above it in bash prompt.

finished bash prompt

So ok googling for a few hours produced a failed attempt at using PROMPT_DIRTRIM=2 (which only works on bash v.4 which is not installed on OS X, you can get it from macports so i wish you good luck)

Found a post here that looked like it might have worked… nope. Then I looked this post which was sort of unrealated but there was a useful comment from swobodin which i used to get this to work.

The function is:

function last_two_dirs {
pwd |rev| awk -F / '{print $1,$2}' | rev | sed s_\ _/_
}

So I dropped that in my ~/.bash_profile and I call the function from my export PS1 line (with colors and git functions too):

export PS1='\[33[0;32m\]$(date +%H:%M:%S) \[33[0;36m\]$(last_two_dirs)\[33[0m\]$(__git_ps1)\[33[0;33m\]$(git_dirty_flag)\[33[0m\] ➡  '