gistfile1.rb

    def self.change_passwd(login,passwd)
      outputs = Hash.new
      #$expect_verbose = true
      PTY.spawn("/usr/bin/passwd #{login}") do |gdb_out,gdb_in,pid|
        gdb_out.expect(/^Enter new UNIX password: /,1) do |r|
          gdb_in.printf("#{passwd}\n")
        end

        gdb_out.expect(/^Retype new UNIX password: /,1) do |r|
          gdb_in.printf("#{passwd}\n")
        end

        outputs[:stdout] = gdb_out.expect(/^passwd: password updated successfully/,3)
        if outputs[:stdout] =~ /success/
          outputs[:exitstatus] = 0 
        else
          outputs[:exitstatus] = 1 
        end
        outputs[:pid] = pid
      end
      outputs
    end