Expect scripting language writing

What is expect

Expect is a relatively simple and easy-to-use script programming language based on TCL, used for automatic and interactive task programs to communicate, without manual intervention, such as SSH FTP, these programs normally need to manually interact with them, The use of expect can be used to simulate the process of manual interaction, to achieve automatic and remote program interaction, so as to reach the purpose of automation

Expect procedure workflow

Expect workflow can be understood as spawn START process----->expect expected keyword----->send send character to process------> Exit End

Installing expect software

Service-Side 172.18.1.211

Client 120.27.54.50

The so-called server is actually the software that installs the expect

[email protected] ~]# Yum list |grep expect

[Email protected] ~]# yum-y install expect.i686

2. After installing the expect software, test it on the server now.

[Email protected] ~]# ssh-p [email protected]

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3. Write expect script

#!/usr/bin/expect # #expect脚本

Spawn ssh-p [email protected] # #远程连接到服务器

Set Timeout 60

expect "*password:" # #expect期待关键字

Send "xxxxx\n" # #send向进程发送字符 XXXXX means the password "\ n" for carriage return

expect EOF # #expect Expect EOF indicates the beginning and end of this statement

Exit # #退出

Operating on the server-side 172.18.1.211

[Email protected] script]# VI test.exp

650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M01/5B/FA/wKiom1UYGCigdsU_AAB3l6CwZOw933.jpg "title=" 222222222222.png "alt=" Wkiom1uygcigdsu_aab3l6cwzow933.jpg "/>

4. Test on the server 172.18.1.211

[email protected] script]# expect Test.exp

650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M02/5B/F4/wKioL1UYGYyQMa7PAAEcyKdp61c664.jpg "title=" 3333333333.png "alt=" Wkiol1uygyyqma7paaecykdp61c664.jpg "/>

A simple expect script is ready to be written.

This article is from the "Scribbled Life" blog, so be sure to keep this source http://972010.blog.51cto.com/962010/1626268

Expect scripting language writing