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linux - 用于 cisco 设备静态路由更改的 Linux sh+expect 脚本

问题描述

我有以下脚本，现在我在使用此脚本的一些网络更改中遇到了以下问题。

.sh 脚本

 echo -n "Enter the SSH username :"
 read -e username
 echo -ne '\n'
 echo -n "Enter the SSH password :"
 read -s -e password
 echo -ne '\n'
 for device in `cat /var/scripts/list.txt`; do
 /var/scripts/config_changer_multi_device/configure-cisco.exp $device $password $username ;
 done

并遵循 .expect 脚本：

#!/usr/bin/expect -f

 set hostname [lindex $argv 0]
 set username [lindex $argv 2]
 set password [lindex $argv 1]
 
 send_user "\n"
 send_user ">>>>>  Working on $hostname @ [exec date] <<<<<\n"
 send_user "\n"
 
 spawn ssh -o StrictHostKeyChecking=no $username\@$hostname

 expect {
 timeout { send_user "\nTimeout Exceeded - Check Host\n"; exit 1 }
 eof { send_user "\nSSH Connection To $hostname Failed\n"; exit 1 }
 "*#" {}
 "*assword:" {
 send "$password\n"
 }
 }
 
 expect "*#"
 send "enable\n"
 expect "*#"
 send "conf t\n"
 expect "(config)#"
 send "ip route 8.8.8.8 255.255.255.255 $gateway\n"
 expect "(config)#"

 send "exit\n"
 expect "*#"
 send "write mem\n"
 expect "*#"
 send "exit\n"
 expect ":~\$"
 exit

我运行 .sh 脚本，为 ssh 连接提供用户登录名和密码。当我有静态网关而不是变量时，这工作正常。我想要的是在静态路由添加的地方有变量 $gateway 从文件中获取值。例如，如果我有路由器 IP 为 10.100.100.50 的文件 list.txt，我希望脚本也从文件 gateway.txt 中获取第一个值，然后从 list.txt 和 gateway.txt 中获取第二个位置，依此类推，因为在每个路由器上，网关 IP 都是另一个.

提前感谢您的帮助。

标签： linuxshellexpectcisco

解决方案

也许你想要

#!/usr/bin/env bash
read -p "Enter the SSH username : " username
read -p "Enter the SSH password : " -s -e password

cd /var/scripts      # or perhaps: cd "$(dirname "$0")"

while IFS=$'\t' read -r device gateway; do
    ./config_changer_multi_device/configure-cisco.exp "$device" "$gateway" "$password" "$username"
done < <(
    paste ./list.txt ./gateway.txt
)

为了增加一点安全性，密码不会出现在ps输出中供任何人看到：

#!/usr/bin/env bash
read -p "Enter the SSH username : " username
read -p "Enter the SSH password : " -s -e password
export username password

cd /var/scripts      # or perhaps: cd "$(dirname "$0")"

while IFS=$'\t' read -r device gateway; do
    ./config_changer_multi_device/configure-cisco.exp "$device" "$gateway"
done < <(
    paste ./list.txt ./gateway.txt
)

而期望脚本看起来像

#!/usr/bin/expect -f

lassign $argv hostname gateway
set username $env(username)
set password $env(password)

# ...

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