delete-old-branches.sh

#!/bin/bash
DRY_RUN=${DRY_RUN:-"true"}
ECHO='echo '
OLDPWD=$(pwd)
cd ${GITHUB_DIR?:'yo man, provide a damn github root dir'}
for dir in $(find . -maxdepth 1 -type d | tail -n +2); do 
  for branch in $(git branch -a | sed 's/^\s*//' | sed 's/^remotes\///' | grep -v 'master$'); do
    if [[ "$(git log $branch --since "2 months ago" | wc -l)" -eq 0 ]]; then
      if [[ "$DRY_RUN" = "false" ]]; then
        ECHO=""
      fi
      local_branch_name=$(echo "$branch" | sed 's/remotes\/origin\///')
      $ECHO git branch -d $local_branch_name
      $ECHO git push origin --delete $local_branch_name
    fi
  done
done
cd $OLDPWD