在Expect脚本中处理多个Spawn进程 [英] Handle multiple Spawn process in expect script

问题描述

这是我的Expect脚本用例(我有几个用例之一)

Here is my use case for expect script ( one of few i have)

我想通过ssh运行多个sed命令.就像构建前的环境设置一样. 我想运行这样的东西:-

I want to run multiple sed command over ssh. Its like pre-build environment setup. I want to run something like this :-

#!/usr/bin/expect
set timeout -1

spawn -noecho bash -c "ssh -t user@host 'sed -i <some_stuff1> <file1>'"
spawn -noecho bash -c "ssh -t user@host 'sed -i <some_stuff2> <file2>'"
spawn -noecho bash -c "ssh -t user@host 'sed -i <some_stuff3> <file3>'"

expect {
  -re ".*sword.*" {
     exp_send "$env(PASS_WORD)\n"
     exp_continue
  }
}

但仅执行最后一个sed命令.第一个和第二个将被跳过.

But only last sed command will execute. 1st and 2nd will be skipped.

我想念的隐藏的宝石是什么?

What could be the hidden gem i am missing?

这是我到目前为止所看到的，但没有帮助

Here is what i looked at so far but not helpful

处理期望脚本中的多个语句

期望脚本:如何处理两个进程?

同时处理多个流程-野生动物园在线图书

推荐答案

在这里您真的不需要 multiple (意味着 parallel )spawn.

You don't really need multiple (means parallel) spawn here.

#!/usr/bin/expect

set timeout 60

set cmds [list "ssh host1 ..." "ssh host2 ..." "ssh host3 ..."]

foreach cmd $cmds {
    spawn -noecho bash -c $cmd
    expect {
        -nocase "password" {
            exp_send "$env(PASS_WORD)\"
            exp_continue
        }
        eof { wait } ; # at this time the last spawn'ed process has exited
    }
}

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