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路由器配置通过预期脚本导出-启用用户名？

tag-icon • tag-icon scripting expect
路由器配置通过预期脚本导出-启用用户名？

我正在编写一个 Expect 脚本，用于从我的主机中提取配置信息。

问题是，我的某些主机（输入启用命令时）会提示输入登录名和密码。这主要是较旧的 HP 套件，但我在其他地方也遇到过这种情况。

如果这是合法语法，那么像下面这样的嵌套 expect 语句就可以做到这一点。我该如何实现这一点？

expect {
  default { send_user "\nEnable Mode Failed - Check Password\n"; exit 1 }
  "*\#" {}
   "*>" {
    send "enable\n"
    expect{
        "Login" {
            send "$username\n"
        }
        default {}
    }
    expect "*assword"
    send "$enablepassword\n"
    expect "*\#"
 }
}

我知道我的语法只是稍微偏离了一点 - 我已经看到很多描述使用嵌套期望的参考资料 - 但就我而言，我无法完全理解它。

答案1

你可以这样写：

exp_internal 1
expect {
    default { send_user "\nEnable Mode Failed - Check Password\n"; exit 1 }
    "*>" {
        send "enable\r"
        expect{
            "Login" {
                send "$username\r"
                exp_continue
            }
            "*assword" {
                send "$enablepassword\r"
            }
        }
        # Now, look back to the outer expect to continue expecting the "#" prompt
        exp_continue
    }
    "*#"
}
  • 使用exp_internal 1启用调试
  • 用以下方式终止send命令\r（回车键是“按下回车键”）
  • exp_continue在包含的内容内循环expect以继续寻找其他模式。

答案2

非常感谢 Glenn，我得到了一个脚本，它可以让我从我的各种 Cisco 或 HP 设备中提取信息。

#!/usr/bin/expect -f   
set hostname [lindex $argv 0];
set username [lindex $argv 1];
set password [lindex $argv 2];
set enablepassword [lindex $argv 3];
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"
    }
}
# This allows for handling any of the various HP login screens. 
sleep 5
send " "
sleep 5
send "3\n"
sleep 5        
expect {
    "*>" {
        send "enable\n"
        expect {
            "*ogin" {
                send "$username\n"
            }
        }
        expect {
            "*assword" {
                send "$enablepassword\n"
                exp_continue
            }
            exp_continue
        }
    }
    "*\#" {}
    default { send_user "\nEnable Mode Failed - Check Password\n"; exit 1 }
    }
# Disable paging. This is both the HP and Cisco statements.
send "terminal length 0\n"
send "no page\n"
expect "*\\#"
log_file -noappend ./$hostname
send "show run\n"
expect "#\n"
log_file


send "end\n"
expect "\#"
expect "\#"
send "exit\n"
expect ":~\$"
exit

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