Cacher is the code snippet organizer for pro developers

https://kparal.wordpress.com/2011/04/15/git-tip-of-the-day-pruning-stale-remote-tracking-branches/
Wnat to delete remotes??
http://ben.lobaugh.net/blog/201616/cleanup-and-remove-all-merged-local-and-remote-git-branches

git remote show origin

git remote prune origin --dry-run

without --dry-run the tracked branches are deleted