Like FileUtils#sh but lets you specify a file to redirect output to. Helpful for building rake tasks.

sh_redirect.rb

# Like sh, but
# 1. lets you specify a file to redirect output to and
# 2. removes the file if there's an error
def sh_redirect(*args, out:)
  sh(*args, { out: out }, {}) do |ok, status|
    unless ok
      rm_f out
      raise "Command failed: `#{args.join(' ')}`\nDeleted `#{out}`"
    end
  end
end