# File lib/fakefs/fileutils.rb, line 212
    def chown(user, group, list, _options = {})
      list = Array(list)
      list.each do |f|
        if File.exist?(f)
          uid = if user
                  user.to_s =~ /\d+/ ? user.to_i : Etc.getpwnam(user).uid
                end
          gid = if group
                  group.to_s =~ /\d+/ ? group.to_i : Etc.getgrnam(group).gid
                end
          File.chown(uid, gid, f)
        else
          fail Errno::ENOENT, f
        end
      end
      list
    end