Git Repositories auto pull for backup

git_backup

#!/usr/bin/ruby

USER = "git"
HOST = "ssh://#{USER}@github.com/"
COMMAND = "git clone #{HOST}"
EMAIL = ["xxx@xxx.com", "ooo@xxx.com"]

repos = []
repos << %w"1 2 3 4"
repos << %w"5"

repos.flatten!

MAIL_TEST = false

$_logString = %{}

def gotoDir(dirname)
  # Check target directory is exist in current directory.
  unless Dir.entries('.').include?(dirname)
    Dir.mkdir(dirname)
  end
  
  Dir.chdir(dirname)
  setLog("Change directory to #{dirname}.\nNow: #{`pwd`}")
end

def setLog(_string, command = false)
  
  unless command
    $_logString += "[#{Time.now}] #{_string}\n\n"
    puts _string
  end
  
  if command
    result = `#{_string}`
    $_logString += "[#{Time.now}]\n\n#{result}\n\n"
  end
end

def sendMail
  email_string = ""
  i = 0
  EMAIL.map do |mail|
    case i
    when 0
      email_string += "#{mail}"
    else
      email_string = "-c #{mail} " + email_string
    end
    i+=1
  end

  `echo "#{$_logString}" | mail -s "Git Backup Finished." #{email_string}`
end

gotoDir("GIT_BACKUP")

# Check if repo is not exist, git clone it.
repos.each do |repo|
  break if MAIL_TEST
  next if Dir.exist?(repo)
  setLog("Ready to clone repo: #{repo}")
  setLog("#{COMMAND}#{repo}.git")
  setLog("#{COMMAND}#{repo}.git", true)
end

setLog("Nothing to clone or clone has been finished.")
setLog("Ready to pull the newest version from repo's remote.")

repos.each do |repo|
  break if MAIL_TEST
  Dir.chdir(repo)
  setLog("Ready to pull: #{repo}")
  setLog("git pull origin master", true)
  Dir.chdir("../")
end

setLog("Action finished.")
gotoDir("log")
File.open("#{Time.now.strftime("%Y-%m-%d_%H-%M-%S")}.log", "a+") do |f|
  f << $_logString
end
#sendMail()