期待意外 [英] Expecting the Unexpected in Expect

问题描述

当看到除预期之外的其他信息时，我该如何给出预期的指示?

How can I give an instruction to expect, when it sees anything other than what it expects?

例如，我尝试自动进行登录.除了成功尝试之外，我还需要脚本向我发送错误消息.我如何期待意外的输出? (我知道一些结果，例如连接被拒绝或密码错误，但是我想抓住一切)

Example, I attempt to automate a login. For anything other than a successful attempt, I need the script to mail me an error. How do I expect unexpected output? (I know some outcomes, like connection denied, or wrong password, but I want to catch everything)

推荐答案

尝试如下:

set timeout 10; # set a reasonable timeout

# expect and send username/password ...

set success 0
set err_msg ""
expect {
  "Login success!" {
    set success 1
  }
  eof {
    set err_msg $expect_out(buffer)
  }
  timeout {
    expect *
    set err_msg $expect_out(buffer)
  }
}

if {! $success} {
  send_mail $err_msg
  exit 1
}

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