Linux Shell：为什么“发送”命令不运行

问题描述

我需要以下代码的帮助。我只需要完成一些简单的任务即可。 bakcup并替换一些ssl证书文件。但它似乎不起作用。下面的代码有什么问题：

import_esx() {
local username=root
local backuptimestamp=$(date +"%m-%d-%y-%I:%M:%s_%p")

/usr/bin/expect << EOF
set timeout 30
spawn ssh -l $username $Ip_Address
expect {
        "(yes/no)?" { send "yes\r"; exp_continue }
        "*?assword: " { send "$CommonPassword\r"; exp_continue}
}

send_user "backing up current certificates\r"
send "mv /etc/vmware/ssl/rui.key /etc/vmware/ssl/rui.key.$backuptimestamp\r"
send "mv /etc/vmware/ssl/rui.crt /etc/vmware/ssl/rui.crt.$backuptimestamp\r"
send "mv /etc/vmware/ssl/castore.pem /etc/vmware/ssl/castore.pem.$backuptimestamp\r"


EOF
}

谢谢 杰瑞

解决方法

expect {
        "(yes/no)?" { send "yes\r"; exp_continue }
        "*?assword: " { send "$CommonPassword\r"; exp_continue}
}

您exp_continue在每个分支上：您必须期待其他事情，以便停止循环。

在每次发送之前，您应该期待一些提示，通常是shell提示。另外，在执行最后一个mv命令之后，您需要先send "exit\r"，然后再expect eof

假设您的shell提示符以“美元空间”结尾，则可以将它们放在一起：

set prompt {[$] $}

expect {
    "(yes/no)?" { send "yes\r"; exp_continue }
    "*?assword: " { send "$CommonPassword\r"; exp_continue}
    -re $prompt
}
send_user "Backing up current certificates\r"
send "mv /etc/vmware/ssl/rui.key /etc/vmware/ssl/rui.key.$backuptimestamp\r"

expect -re $prompt
send "mv /etc/vmware/ssl/rui.crt /etc/vmware/ssl/rui.crt.$backuptimestamp\r"

expect -re $prompt
send "mv /etc/vmware/ssl/castore.pem /etc/vmware/ssl/castore.pem.$backuptimestamp\r"

e1xpect -re $prompt
send "exit\r"
expect eof