Ruby script to update all git repositories recursively

update_all_repositories.rb

#!/usr/bin/env ruby
# frozen_string_literal: true

require 'logger'

# globals
$stdout.sync = true
$logger = Logger.new($stdout)

# arguments
path = ARGV.first
current_dir = path || Dir.pwd

def repositories(current_dir)
  Dir
    .glob("#{current_dir}/**/.git")
    .map { |path| path.sub('/.git', '') }
end

def change_working_dir(path)
  Dir.chdir(path)
end

def head_branch
  `git remote show origin | grep 'HEAD branch:'`
    .chomp
    .scan(/HEAD branch: (master|main)/)
    .flatten
    .first
end

repositories(current_dir).each do |repository_path|
  $logger.info("Processing repo #{repository_path}")

  # go to repository path
  change_working_dir(repository_path)

  # get head branch or skip
  main_branch = head_branch
  next unless main_branch

  # update remote branches and make the head branch pull
  `git fetch --all &&
    git stash push &&
    git checkout #{main_branch} &&
    git pull origin #{main_branch} &&
    git remote prune origin &&
    git branch --merged #{main_branch} | grep -v #{main_branch} | xargs git branch -d &&
    git checkout -`
end

The git branch --merged master | grep -v master | xargs git branch -d && improvement by @lockland. Thanks! =)

The git branch --merged master | grep -v master | xargs git branch -d && improvement by @lockland. Thanks! =)

:)

I just think you need to replace the string master by that variable you've created main_branch otherwise it wont work for repos that use main branch instead of master one

The git branch --merged master | grep -v master | xargs git branch -d && improvement by @lockland. Thanks! =)

:)

I just think you need to replace the string master by that variable you've created main_branch otherwise it wont work for repos that use main branch instead of master one

Cool! Thank's again! =D

Fixed!