My new favorite utility: autojump

Like any developer, I have amassed an impressive collection of directory trees both broad and deep. Navigating these trees became increasingly cumbersome, and setting CDPATH, using auto-completion, and working with the readline history search alleviated this only somewhat.

Enter autojump, from the package of the same name.

Whatever magic it uses is unbelievably effective. I estimate that in at least 95% of my cases, typing j <name-fragment> changes to the directory I was actually thinking of.

Say I'm working on package scikit-learn. My clone of the Salsa repo is in ~/code/pkg-scikit-learn/scikit-learn. Changing to that directory is trivial, I only need to specify a name fragment:

$ j sci

But what if I want to work on scikit-learn upstream, to prepare a patch, for example? That repo has been cloned to ~/code/github/scikit-learn. No problem at all, just add another name fragment:

$ j gi sci

The magic, however, is most evident with directory trees I rarely enter. As in: I have a good idea of the directory name I wish to change to, but I don't really recall its exact name, nor where (in the tree) it is located. I used to rely on autocomplete to somehow get there which can involve hitting the [TAB] key far too many times, and falling back to find in the worst case, but now, autojump always seems gets me there on first try.

I can't believe that this has been available in Debian for 10 years and I only discovered it now.