Automatically log on to the server shell script

#!/bin/bash

#Description: Auto Login The remote server
#Author: Majinxu
#Version: 1.0
#CreateTime: 2018-3-012 18:34:41

User= "Majinxu"
Passwd= "! Ieric1234 "

host_list= ("st1.qa.bj2.yongche.com"
"St2.qa.bj2.yongche.com"
"St3.qa.bj2.yongche.com"
)

#seletc the Host
Select Host in ${host_list[@]};
Do
Break
Done

#execute the SSH action
Expect-c "
Spawn ssh [email protected] $host
Expect {
\ "yes\/no\" {send \ "yes\n\"; Exp_continue}
\ "Password:\" {Send \ "$passwd \n\"}
}
Interact
"

Explain:

1. EXPECT-C:-c parameter followed by string
2. Spawn ssh [email protected] $host connection server
3. Expect {
   \ "yes\/no\" {send \ "yes\n\"; Exp_continue}
   \ "Password:\" {Send \ "$passwd \n\"}
   }
   Enter and receive user name password
   Is
   "Yes/no" {send "yes\n"; Exp_continue}
   "Password:" {send "$PASSWD \ n"}
   The result after escaping
4. Interact
   Maintain interactive status after execution and give control to console

Automatically log on to the server shell script