List remote Git branches and the last commit date & user for each branch. Sorted by most recent commit date.

git-branches-by-commit-date.sh

# Credit http://stackoverflow.com/a/2514279 && https://gist.github.com/jasonrudolph/1810768
for branch in `git branch -r | grep -v HEAD`;do echo -e `git show --format="%ci\t%cr\t%an" $branch | head -n 1` \\t$branch; done | sort -r
# See https://www.kernel.org/pub/software/scm/git/docs/git-show.html for other data

output.txt

# Example output (resulting from running command on the Rails repo — https://github.com/git-tfs/)

2014-01-18 03:42:25 -0800       6 weeks ago     Matt Burke      origin/master
2013-11-01 11:47:57 +0800       4 months ago    Sean M. Collins origin/issue_474
2013-06-14 02:49:34 -0400       9 months ago    Matt Burke      origin/lightfoot
2013-06-08 08:01:43 -0400       9 months ago    Matt Burke      origin/alternate-cleanup-implementations
2013-06-08 08:00:07 -0400       9 months ago    Matt Burke      origin/time-since-start
2013-06-08 07:48:25 -0400       9 months ago    Matt Burke      origin/debug_slow_commit
2013-02-25 13:00:19 -0500       1 year ago      Matt Burke      origin/rename-should-not-delete