交互式转化批处理工具 expect

2 set ip [lindex $argv 0]
3 set user [lindex $argv 1]
4 set password [lindex $argv 2]
5 set timeout 10
6 spawn ssh $user@$ip
7 expect {
8
"yes/no" { send "yes\n";exp_continue }
6}
7 interact
范例3：expect 变量
#!/usr/bin/expect set ip 10.0.0.7
1 #!/usr/bin/expect
2 set ip 10.0.0.7
3 set user root

4 set password magedu
5 set timeout 10
6 spawn ssh $user@$ip
匹配hi,hello,bye任意字符串时，执行相应输出。等同如下：
expect { "hi" { send "You
1 expect { 2 "hi" { send "You said hi\n"} 3 "hehe" { send "Hehe yourself\n"} 4 "bye" { send " Good bye\n"} 5}
示例：
Shell
expect -c 'expect "\n" {send "pressed 1 expect -c 'expect "\n" {send "pressed enter\n"}' 2 expect -d ssh.exp
expect中相关命令
spawn 启动新的进程 expect 从进程接收字符串 send 用于向进程发送字符串 interact 允许用户交互 exp_continue 匹配多个字符串在执行动作后加此命令
13 expect "]#" { send "echo magedu |passwd --stdin hehe\n" }
14 expect "]#" { send "exit\n" }
15 expect eof
16 EOF
17
18 #/ssh5.sh 192.168.8.10 root magedu
11 #********************************************************************
12 NET=10.0.0
13 user=root
14 password=magedu
15
16 for ID in 6 7 111;do
17 ip=$NET.$ID
范例1：
#!/usr/bin/expect spawn scp /etc/fstab
1 #!/usr/bin/expect
2 spawn scp /etc/fstab 10.0.0.7:/data
3 expect {
4
"yes/no" { send "yes\n";exp_continue }
5
"password" { send "magedu\n" }
交互式转化批处理工具 expect
expect 是由Don Libes基于Tcl（ Tool Command Language ）语言开发的，主要应用于自动化交 互式操作的场景，借助 expect 处理交互的命令，可以将交互过程如：ssh登录，ftp登录等写在一个 脚本上，使之自动化完成。尤其适用于需要对多台服务器执行相同操作的环境中，可以大大提高系 统管理人员的工作效率
4 #Author: wangxiaochun
5 #QQ:
29308620
6 #Date:
2020-01-06
7 #FileName： expect6.sh
8 #URL:
9 #Description： The test script
10 #Copyright (C): 2020 All rights reserved
6}
7 expect eof
范例2：
#!/usr/bin/expect spawn ssh 10.0.0.7
1 #!/usr/bin/expect
2 spawn ssh 10.0.0.7
3 expect {
4
"yes/no" { send "yes\n";exp_continue }
5
"password" { send "magedu\n" }
6 set timeout 20
7 spawn ssh $user@$ip
8 expect {
9
"yes/no" { send "yes\n";exp_continue }
10
"password" { send "$password\n" }
11 }
12 expect "]#" { send "useradd hehe\n" }
expect最常用的语法(tcl语言:模式-动作)
单一分支模式语法：
[root@centos8 test]#expect 1 [root@centos8 test]#expect 2 expect1.1> expect "hi" {send "You said hi\n"} 3 hahahixixi 4 You said hi
范例7: shell脚本利用循环调用expect在CentOS和Ubuntu上批量创建用户
#URL:
#Description：
The test script 1 #!/bin/bash
2#
3 #********************************************************************
9
"password" { send "$password\n" }
10 }
11 expect "]#" { send "useradd haha\n" }
12 expect "]#" { send "echo magedu |passwd --stdin haha\n" }
13 send "exit\n"
14 expect eof
15 #/ssh4.exp 10.0.0.7 root magedu
范例6：shell脚本调用expect
#/ssh5.sh
192 168 8 10 root 1 #!/bin/bash
2 ip=$1
3 user=$2
4 password=$3
5 expect <<EOF
8
"password" { send "$password\n" }
9}
10 interact
11 #/ssh3.exp 192.168.8.10 root magedu
范例5：expect 执行多个命令
expect eof
#/ssh4.exp 10.0.0.7
root magedu 1 #!/usr/bin/expect
匹配到hi后，会输出“you said hi”，并换行
多分支模式语法：
[root@centos8 test]#expect
1 [root@centos8 test]#expect 2 expect1.1> expect "hi" { send "You said hi\n" } "hehe" { send "Hehe yourself\n" } "bye" { send "Good bye\n" } 3 hehe 4 Hehe yourself 5 expect1.2> expect "hi" { send "You said hi\n" } "hehe" { send "Hehe yourself\n" } "bye" { send "Good bye\n" } 6 bye 7 Good bye 8 expect1.3> expect "hi" { send "You said hi\n" } "hehe" { send "Hehe yourself\n" } "bye" { send "Good bye\n" } 9 hi 10 You said hi 11 expect1.4>
expect 语法：
expect [选项] [ -c cmds ] [ [ -[f|b] ] 1 expect [选项] [ -c cmds ] [ [ -[f|b] ] cmdfile ] [ args ]
常见选项：
-c：从命令行执行expect脚本，默认expect是交互地执行的
-d：可以输出输出调试信息
2 set ip [lindex $argv 0]
3 set user [lindex $argv 1]