1. Expect applications
1) Transfer files
2) Execute commands remotely, no interaction, no need to enter a password
3) The core of the online shell script (tool) is expect, which is the distribution system.
2. Expect installation
yum install -y expect
3. Expect language Example 1: Automatically log in to a server remotely
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#! /usr/bin/expect set host “192.168.133.132” set passwd “123456” spawn ssh [emailprotected]$host expect { “yes /no” {send “yes “password:” {send “$passwd } interact< /p> |
4. Expect language example 2: After automatically logging in to a server remotely, and executing the command
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#!/usr/bin/expect set user “root” set passwd “123456” spawn ssh [email protected] expect { “yes/no” {send “yes “password: “{send “$passwd } expect “]*” send “touch /tmp/12.txt expect “]*” send “echo 1212> /tmp/12.txt expect “]*” send ” exit |
5. Passing parameters of expect script
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#!/usr/bin/expect set user [lindex $argv 0] set host [lindex $argv 1] set passwd “123456” set cm [lindex $ argv 2] spawn ssh [email protected]$host expect { “yes/no” {send “yes “password:” {send “$passwd } expect “]*” send “$cm expect “]*” send “exit |
$ argv0 Indicates the parameter to be passed to the variable user; $argv1, $argv2 are the same.
6. Sync file of expect script
7. Build file distribution system for expect script
8.
| < p>#!/usr/bin/expect
set host [lindex $argv 0] set passwd “123456” set cm [lindex $argv 1] spawn ssh [email protected]$host expect { “yes/no” {send “yes “password:” {send “$passwd } expect “]*” send “$cm expect “]*” send “exit |