delete merged branches before specified date.

gitclean.sh

#!/usr/bin/env bash

# usage:
# sh ./gitclean.sh <date> <run>
# date: format like 2015-06-03, all merged branches before this date will be deleted
# run:  when you do NOT add "run" as a secound parameter, 
#       then the script is run in DRY mode (just output, nothing deleted)

# when you've been asked multiple times for the reposetory password, check out the folowing link 
# http://stackoverflow.com/questions/5343068/is-there-a-way-to-skip-password-typing-when-using-https-github

date=$1

if [[ "$date" -eq NULL ]]; then
    echo "you need to specify a date in the format yyyy-mm-dd!";
    exit;
fi

run=$2;

for branch in $(git branch -a | sed 's/^\s*//' | sed 's/^remotes\///' | grep -v 'master$' | grep -v 'release$'); do
  if [[ "$(git log $branch --since $date | wc -l)" -eq 0 ]]; then
  
    # skip release branches
    if [[ "$branch" =~ "release/" ]]; then
        continue;
    fi
    if [[ "$branch" =~ "origin/" ]]; then
      # strip remotes and origin from branch name
      local_branch_name=$(echo "$branch" | sed 's/^remotes\///' | sed 's/^origin\///')
      
      echo "git push origin --delete $local_branch_name"
      if [[ "$run" = "run" ]]; then
        git push origin --delete $local_branch_name
      fi
    else
      echo "git branch -D $branch"
      if [[ "$run" = "run" ]]; then
        git branch -D $branch
      fi
    fi
  fi
done