在bash脚本中期望 [英] Expect within bash script

问题描述

我正在尝试将期望脚本实现为bash脚本.请耐心等待，因为我还不熟悉bash/expect.

I am trying to implement an expect script into a bash script. Bear with me since I am fairly new to bash/expect.

这是预期的脚本，可以按预期工作:

Here is the expect script that works as intended:

log_user 0

file delete foo.txt

set fh [open foo.txt a]

set servers {xxx@server1 xxx@server2}

foreach s $servers {
spawn ssh $s
expect "password: "
send "PASSWORD\r"
expect "$ "
send "grep "something" /some/log/file.log"
expect "$ " { puts $fh "$expect_out(buffer)"}
send "exit\r"
}

close $fh

现在，我希望将此期望脚本包含在bash脚本中，但是它不能按预期工作.

Now, I am hoping to include this expect script in a bash script but it is not working as intended.

这是我到目前为止所拥有的:

Here is what I have so far:

#!/bin/bash

XYZ=$(expect -c "
file delete foo.txt

set fh [open foo.txt a]

set servers {xxx@server1 xxx@server2}

foreach s $servers {
spawn ssh $s
expect "password: "
send "PASSWORD\r"
expect "$ "
send "grep "something" /some/log/file.log"
expect "$ " { puts $fh "$expect_out(buffer)"}
send "exit\r"
}

close $fh
")

echo "$XYZ"

我得到的错误是:

command substitution: line 42: syntax error near unexpected token `('
command substitution: line 42: `expect "$ " { puts $fh "$expect_out(buffer)"}'

我愿意采用任何其他方式来实现这一目标！ :)

I'm open to any other ways to implement this! :)

推荐答案

您可以使用/usr/bin/expect -c执行expect命令:

#!/bin/bash

/usr/bin/expect -c ' 

file delete foo.txt

set fh [open foo.txt a]

set servers {xxx@server1 xxx@server2}

foreach s $servers {
spawn ssh $s
expect "password: "
send "PASSWORD\r"
expect "$ "
send "grep "something" /some/log/file.log"
expect "$ " { puts $fh "$expect_out(buffer)"}
send "exit\r"
}

close $fh
'

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