linux - 期待，互动，然后再次期待

Question

有几篇关于相同内容的帖子，但我仍然无法使我的 expect 脚本正常工作。我的意图是将所有内容自动化，但为用户保留输入密码。所以脚本有 3 个部分:

1. 自动登录
2. 让用户输入密码
3. 将控制权交还给 Expect 脚本以继续工作

所以我有将生成的脚本，其中有 3 个读取命令。第一个和最后一个应该由 Expect 填充，第二个我想输入我自己:

#!/bin/ksh
read user?User:
echo "Expect entered the username $user"
read pass?Password:
echo "User entered the password $pass"
read command?"Shell>"
echo "Expect entered the command $command"

我期望的脚本:

#!/usr/bin/expect
spawn ./some_script
expect User
send I-am-expect\r
expect Password
interact
expect Shell
send I-am-expect-again

不幸的是，在我输入密码后脚本不会继续并留在交互模式:

[root@localhost ~]# ./my-expect
spawn ./some_script
User:I-am-expect
Expect entered the username I-am-expect
Password:i am user
User entered the password i am user
Shell>

最后，当我在“Shell”上输入内容并按 [ENTER] 时，期望退出并出现错误:

Expect entered the command
expect: spawn id exp4 not open
    while executing
"expect Shell"
    (file "./my-expect" line 7)
[root@localhost ~]#

我感谢对此问题的任何解释或解决方案。我正在使用 expect 版本 5.45

Answer 1

您可以自己读取(expect_user) 用户的密码，然后发送给生成的程序。例如:

[STEP 101] # cat foo.exp
proc expect_prompt {} \
{
    global spawn_id
    expect -re {bash-[.0-9]+(#|\$)}
}

spawn ssh -t 127.0.0.1 bash --noprofile --norc
expect "password: "

stty -echo
expect_user -timeout 3600 -re "(.*)\[\r\n]"
stty echo
send "$expect_out(1,string)\r"

expect_prompt
send "exit\r"
expect eof
[STEP 102] # expect foo.exp
spawn ssh -t 127.0.0.1 bash --noprofile --norc
root@127.0.0.1's password:
bash-4.3# exit
exit
Connection to 127.0.0.1 closed.
[STEP 103] #