Linux uses expect script to implement remote machine automatic login _linux Shell

First, create a expect script ssh_expect, which reads as follows:

#!/usr/bin/expect-f
set hostname [lindex $argv 0]
set user [lindex $argv 1]
set passwd [lindex $argv 2]
s Et timeout
set force_conservative 1
if {$force _conservative} {
  set Send_slow {128.1}
}
spawn ssh $user @ $hostname;
Expect {
    "*continue connecting" (yes/no)? {send-s "yes\r"; exp_continue}
    " *assword: "{
        send-s" $passwd \ r ";
    }
}
Interact

Then define some command aliases, such as:

Alias  h101= ' ssh_expect 192.168.0.101 <user> <password> '
alias  h102= ' Ssh_expect 192.168.0.102 <user> <password> '

These aliases can be written to the ~/.BASHRC file

Then execute h101 can automatically log on to the 192.168.0.101 machine.