One of the last great discoveries for me as a command line Linux user. rupa-j adds the j/jd to jump to a place you've previously been in your command line history. So if you were working in some huge Firefox source path which included "media", then:
would find it from your history of your CWD's, and jump you there. "jd" is the same, but a pushd.
You will be surprised at how often you want to go back to a place you've been before, and how intuitive it is:
This is a family server