Bash alias to list or prune local tracking branches that do not exist on remote anymore.

.bashrc

# Source: https://web.archive.org/web/20240930075945/https%3A%2F%2Fstackoverflow.com%2Fquestions%2F13064613%2Fhow-to-prune-local-tracking-branches-that-do-not-exist-on-remote-anymore#17029936
alias git-list-untracked='git fetch --prune && git branch -r | awk "{print \$1}" | grep -E -v -f /dev/fd/0 <(git branch -vv | grep origin) | awk "{print \$1}"'
alias git-remove-untracked='git fetch --prune && git branch -r | awk "{print \$1}" | grep -E -v -f /dev/fd/0 <(git branch -vv | grep origin) | awk "{print \$1}" | xargs git branch -d'
alias git-remove-untracked-force-unmerged='git fetch --prune && git branch -r | awk "{print \$1}" | grep -E -v -f /dev/fd/0 <(git branch -vv | grep origin) | awk "{print \$1}" | xargs git branch -D'

git-remove-untracked-force-unmerged has been added and egrep has been replaced with grep -E.