anc is a cmd line tool (short for anchor), that keeps bookmarks of directories. (so far only tested with bash)
In your case:
anc a /Project/Warnest/docs/ ~/Dropbox/Projects/ds/test/
this adds both directories to the anchor(think bookmarks) list
now if you want to jump to
/Project/Warnest/docs/ from anywhere
on your system type:
and if you want to jump to
anc ds test
Apart from matching text against the bookmarked paths anc has many other
convenient ways for jumping around directories.
starts the interactive mode, that lists all bookmarks by number,
so all you have to type is the number
If you type:
a list matching all bookmarks (in your case both bookmarks) gets shown and you can select from it using your arrow keys, this is a very quick and intuitive way.
Get anc at the project's github page:
There's also a README with example usage.
Full disclosure: I'm the author of this script. I hope some people will find it useful.