Folder mark.
A simple tool for quickly navigating between distant locations in a large and unfamiliar directory tree (source base).
Once you've located a "location of interest", you can quickly type:
fmark to instantiate a mark at this location with the given name. fjump will immediately cd you back to that location. funmark will delete the location from your shortcuts.
Persistant storage is used in ~/.folder-mark
The utilities are defined as bash functions, so installation involves sourcing the foldermark.sh file into your environment.