怎么自动填写有交互的shell脚本

Question

在写一个shell脚本A，其中调用了另一个脚本，例如test.sh
但是test.sh中有交互的内容
需要用户依次输入 a 回车 b 回车 回车 回车
我想自动的实现它，请问应该在A中怎么写才会自动填入这些内容，前提是tesh.sh执行的过程还要让用户看到，不能把它重定向

Answer 1

用pexpect，以下代码供参考：

#!/usr/bin/python

import sys 
import pexpect

password = 'password'
expect_list = ['(yes/no)', 'password:']

p = pexpect.spawn('ssh username@localhost ls')
try:
    while True:
        idx = p.expect(expect_list)
        print p.before + expect_list[idx],
        if idx == 0:
            print "yes"
            p.sendline('yes')
        elif idx == 1:
            print password
            p.sendline(password)
except pexpect.TIMEOUT:
    print >>sys.stderr, 'timeout'
except pexpect.EOF:
    print p.before
    print >>sys.stderr, '<the end>'

输出:

username@localhost's password: password

Permission denied, please try again.
username@localhost's password: password

Permission denied, please try again.
username@localhost's password: password

Permission denied (publickey,gssapi-with-mic,password).

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