linux - 是否可以设置 'expect' 的退出代码

Question

以下 bash 脚本不起作用，因为无论远程脚本/tmp/my.sh 返回哪个退出代码，命令“expect”总是返回 0。

有什么想法让它发挥作用吗？谢谢。

#!/usr/bash

user=root
passwd=123456abcd
host=10.58.33.21
expect -c "
  spawn ssh -o StrictHostKeyChecking=no -l $user $host bash -x /tmp/my.sh
  expect {
    \"assword:\" {send \"$passwd\r\"}
    eof          {exit $?}
  }
"
case "$?" in
  0) echo "Password successfully changed on $host by $user" ;;
  1) echo "Failure, password unchanged" ;;
  2) echo "Failure, new and old passwords are too similar" ;;
  3) echo "Failure, password must be longer" ;;
  *) echo "Password failed to change on $host" ;;
esac

编辑于 2013 年 11 月 27 日上午 10:23

感谢您的评论。让我再次强调这个问题，

主脚本应该在 Linux 服务器 A 上静默 运行，在此期间它会无人值守 在服务器 B 上调用另一个脚本 my.sh。问题是如何获取my.sh的退出码？

这就是为什么我不能在我的案例中利用 ssl_key 方法，它至少需要一次配置。

Answer 1

#!/usr/bin/expect

set user root
set passwd 123456abcd
set host 10.58.33.21
set result_code 255

# exp_internal 1 to see internal processing
exp_internal 0

spawn ssh -o StrictHostKeyChecking=no -l $user $host bash -x /tmp/my.sh && echo aaa0bbb || echo aaa$?bbb
expect {
    "assword:"       {send "$passwd\r"; exp_continue}
    -re "aaa(.*)bbb" {set result_code $expect_out(1,string)}
    eof              {}
    timeout          {set result_code -1}
  }

switch $result_code {
  0 { puts "Password successfully changed on $host by $user" }
  1 { puts "Failure, password unchanged" }
  2 { puts "Failure, new and old passwords are too similar" }
  3 { puts "Failure, password must be longer" }
  -1 { puts "Failure, timeout" }
  default { puts "Password failed to change on $host" }
}
exit $result_code