Number of commits in a git repo can be used as a quick-and-dirty proxy of amount of development time spent in a repo. For variations on this theme, see my previous linkpost.

Here's the bash one-liner I wrote and a few lines of its output:

taha@luxor:~
$ THISPATH="/media/bay/taha/projects/ansible/pub/roles"; find "$THISPATH" -maxdepth 2 -iname ".git" -type d -exec bash -c \
"git -C {} rev-list --count --all | tr '\n' '\t'; echo -e ' ${BGreen}${On_Black}{}${Color_Off}' | \
sed 's+/.git++' | sed 's+$THISPATH/++'" \; | sort -n --reverse -
91   dotfiles
42   R
39   lxd-server
36   python3
36   i3wm

Explainer

• We will look for git repos inside the /media/bay/taha/projects/ansible/pub/roles directory, and since this path needs to be referenced twice more in the command we can DRY by defining a local var $THISPATH.
• some roles may contain git submodules, so to avoid including them here we limit depth to only include the top-level .git directory (which is 2 levels down from the search path).
• get the number of commits (across all branches and authors) for each repo.
• tr replaces the trailing newline (introduced by output from git -C ...) with a tab so that number and repo name (which we print next) show on the same line.
• echo -e ' {}' the name of the current repo. I added some colouring for flourish.
• to save on repitition in the output replace full path returned by find by stripping the trailing .git part as well as the dirname part. Note that this is just my cosmetic preference.
• sort by numeric value -n and list in --reverse order. Note the trailing dash which references the output from before the pipe.

Links

• https://links.solarchemist.se/shaare/cb_9xw
• https://stackoverflow.com/a/4061706/1198249
• https://github.com/git-quick-stats/git-quick-stats