期望通过ssh提示脚本更改密码

Question

目前我有一个bash脚本,在ssh上做一些事情时使用expect.看起来像:

#!/bin/bash
#some bash stuff here
...
/usr/bin/expect -c '
    spawn somescript.sh
    expect "password:"
    send "$PASSWD"
'
...

somescript.sh通过ssh对远程服务器执行命令,但现在我的登录需要更改密码.我试过了

/usr/bin/expect -c '
    spawn somescript.sh
    expect "password:"
    send "$PASSWD"
    expect "current password"
    send "$PASSWD"
    expect "new password"
    send "$NEWPASSWD"
'

但我得到一个错误说:

WARNING: Your password has expired.\n Password change required but 
no TTY available.

Answer 1

因此，somescript.sh建立ssh连接后您会收到有关 TTY 不可用的错误。

尝试-t选项！

从ssh 手册页：

-t   Force pseudo-tty allocation.  This can be used to execute arbi-
     trary screen-based programs on a remote machine, which can be
     very useful, e.g., when implementing menu services.  Multiple -t
     options force tty allocation, even if ssh has no local tty.