击/ expect脚本的SSH [英] Bash/Expect Script for SSH

问题描述

我是新来的期待和脚本一般。我试图做一些脚本，以拉动网络设备配置时，我的生活更容易一点。我设法创建一个基本的expect脚本SSH到一个设备并保存配置。

I am new to expect and scripting in general. I am trying to make a few scripts to make my life a bit easier when pulling network device configurations. I managed to create a basic expect script to SSH to a device and save the configuration.

我想在此扩大和允许脚本连接到多个IP像我现在地址，而不是只有一个。我有一个文件名为 LIST.TXT 与每个IP在单独的行数不同的IP地址。

I want to expand upon this and allow the script to connect to a number of IP addresses instead of just one like I have right now. I have a file named list.txt with a few different IP addresses with each IP on a separate line.

我会怎么需要做的，有希望的脚本连接到每个IP地址和执行任务的其余部分在脚本中呢？

What would I need to do to have the expect script connect to each of these IP addresses and perform the rest of the tasks in the script as well?

下面是Expect脚本我到目前为止有：

Here is the Expect script I have so far:

#!/usr/bin/expect -f
#Tells interpreter where the expect program is located.  This may need adjusting according to
#your specific environment.  Type ' which expect ' (without quotes) at a command prompt
#to find where it is located on your system and adjust the following line accordingly.
#
#
#Use the built in telnet program to connect to an IP and port number
spawn ssh 192.168.1.4 -l admin
#
#The first thing we should see is a User Name prompt
#expect "login as:"
#
#Send a valid username to the device
#send "admin"
#
#The next thing we should see is a Password prompt
expect "Password:"
#
#Send a vaild password to the device
send "password\n"
#
#If the device automatically assigns us to a priviledged level after successful logon,
#then we should be at an enable prompt
expect "Last login:"
#
#Tell the device to turn off paging
#
#After each command issued at the enable prompt, we expect the enable prompt again to tell us the
#command has executed and is ready for another command
expect "admin@"
#
#Turn off the paging
send "set cli pager off\n"
#
#Show us the running configuration on the screen
send "show config running\n"
#
# Set the date.
set date [timestamp -format %C%y%m%d]
#
#Test output sent to file with a timestamp on end
#-noappend will create a new file if one already exists
log_file -noappend /home/test.cfg$date
#
expect "admin@"
#
#Exit out of the network device
send "exit\n"
# 
#The interact command is part of the expect script, which tells the script to hand off control to the user.
#This will allow you to continue to stay in the device for issuing future commands, instead of just closing
#the session after finishing running all the commands.`enter code here`
interact

我需要这样一个Bash脚本集成？如果是这样，它可以读取 LIST.TXT 文件的一行，用其作为IP /主机变量，然后读取下一个和重复？

Do I need to integrate this with a Bash script? If so, is it possible to read one line of the list.txt file, use that as the IP/host variable and then read the next and repeat?

推荐答案

这是一个Perl的版本针对此问题：

This is a Perl version for this issue:

安装说明：CPAN期待

Install instruction: cpan Expect

本脚本工作perfectely满足我的需求。

This script works perfectely for my needs.

参数1：Connexion的字符串（如：admin@10.34.123.10）
参数2：明文密码
参数3：要执行的命令

Param 1: connexion string (ex: admin@10.34.123.10) Param 2: clear text password Param 3: command to execute

#!/usr/bin/perl
use strict;

use Expect;

my $timeout=1;

my $command="ssh ".$ARGV[0]." ".$ARGV[2];

#print " => $command\n";

my $exp = Expect->spawn($command) or die "Cannot spawn $command: $!\n";
$exp->raw_pty(1);

LOGIN:
$exp->expect($timeout,
        [ 'ogin: $' => sub {
                     $exp->send("luser\n");         
                     exp_continue; }
        ],
    [ 'yes\/no\)\?\s*$' => sub {
              $exp->send("yes\n");
              goto LOGIN;
              }
    ],
        [ 'assword:\s*$' => sub {
                      $exp->send($ARGV[1]."\n");
            #print "password send : ", $ARGV[1];
                      exp_continue; }
        ],
        '-re', qr'[#>:] $'
);
$exp->soft_close();

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