1，分發系統介紹。

藉助expect使用shell指令碼在伺服器上批量更改程式碼。

2，expect指令碼遠端登入 。

使用命令“yum install -y expect”安裝expect工具。

  自動遠端登入 vim 1.expect
 #! /usr/bin/expect
set host "192.168.177.132"
set passwd "123456"
spawn ssh [email protected]$host
expect {
"yes/no" { send "yes\r"; exp_continue}
"password:" { send "$passwd\r" }
}
interact

chmod +x 1.expect

./1.expect

3,expect指令碼遠端執行命令。

 自動遠端登入後，執行命令並退出vim 2.expect
#!/usr/bin/expect
set user "root"
set passwd "123456"
spawn ssh [email protected]

expect {
"yes/no" { send "yes\r"; exp_continue}
"password:" { send "$passwd\r" }
}
expect "]*"
send "touch /tmp/12.txt\r"
expect "]*"
send "echo 1212 > /tmp/12.txt\r"
expect "]*"
send "exit\r"

chmod +x 2.expect

./2.expect

4,expect指令碼傳遞引數。

vim 3.expect

#!/usr/bin/expect

set user [lindex $argv 0]  //第一個引數的值給user
set host [lindex $argv 1]  //第二個引數的值給host
set passwd "123456"
set cm [lindex $argv 2] //第三個引數的值給cm
spawn ssh [email protected]$host

expect {
"yes/no" { send "yes\r"}
"password:" { send "$passwd\r" }
}
expect "]*"
send "$cm\r"   //此處下面可以設定超時set timeout -1 永不超時或者後面接秒數set timeout 5
expect "]*"
send "exit\r" 

chmod +x 3.expect

./3.expect root 192.168.177.132 "ls;w;df -h"  //一次執行多條命令