scripts.rb

#!/usr/bin/env ruby

def checkout_to_master_and_delete_current_branch
  current_branch = `git rev-parse --abbrev-ref HEAD`.strip
  `git checkout master`
  puts "Deleting branch #{current_branch}"
  `git branch -D #{current_branch}`
  puts "Fetching master"
  `git fetch -p`
  puts "Pulling master"
  `git pull origin master`
end

def swap_file_names(file1, file2)
  File.rename(File.new(file2), 'swap_file_aux')
  File.rename(File.new(file1), file2)
  File.rename(File.new('swap_file_aux'), file1)
end

case ARGV[0]
when 'checkout_to_master_and_delete_current_branch'
  checkout_to_master_and_delete_current_branch
when 'swap_file_names'
  swap_file_names(ARGV[1], ARGV[2])
else
  puts 'Wrong option'
end