Question

我正在尝试将来自telnet的设备与bash脚本中的expect命令连接起来。我想做的事情如下：

#!/usr/bin/expect -f

    telnet_setup()
 {      sleep 10
        expect <<EOF
        spawn telnet $1
        expect "Password:"
        send "mypass\n"
        expect "#"
        send "my command to be run\n"
        expect "Last number to be captured:" 
#Here the whole sentence to be captured something like:
#Last number to be captured: 213124
        set mynumber expect_out(buffer,0) | awk '{print $6}' 
        send "my next command with number $mynumber\"
        expect "Correct number $mynumber is achieved!"
        send "exit\n"
EOF

}

要使用该功能，我使用如下：

telnet_setup 1.1.1.1 > file.txt

我的目标是在$ mynumber中使用此函数在下一个命令中使用。你能否建议如何提供这个？

Answer 1

您在将期望代码与shell代码分开时遇到了一些麻烦。要捕获数字，需要使用捕获括号的正则表达式

    send "my command to be run\r"
    expect -re {Last number to be captured:\s+(\d+)} 
    set mynumber $expect_out(1,string)

当telneting with expect时，如何通过expect_out将输出字作为下一个命令输入变量进行grep？

1 个答案: