Generate a summary of commits in the last week from a series of git repos

git-summary.rb

#!/usr/bin/env ruby

if ['-h', '--help', 'help', '--help'].include? ARGV.first 
    puts "./git-summary <git-dir-1> <git-dir-n>" 
    exit
end

git_cmd = 'git log --since="1 week ago" --author=`whoami` --branches=master --format="%s" --no-merges'

dirs = ARGV.to_a

dirs.each do |dir|
    puts "Changes to #{dir}"
    puts "-----------------"
    puts  `cd ./#{dir} && #{git_cmd}`
    puts ""
end