Blow away branches that are older than a year.

prune.sh

#!/bin/sh

for branch in $(git branch -a | sed 's/^\s*//' | sed 's/^remotes\///' | grep -v 'master$'); do
  if [[ "$(git log $branch --since "12 months ago" | wc -l)" -eq 0 ]]; then
    # I have to do this because "git log" for me returns current directory contents... not sure why yet.
    if [[ ${branch} == *".sh" ]]; then
      continue
    fi

    local_branch_name=$(echo "$branch" | sed 's/remotes\/origin\///')
    git branch -d $local_branch_name
    git push origin --delete $local_branch_name
  fi
done