CentOS expect example to ssh multiple hosts

#!/usr/bin/expect

set timeout 30

 

#example of getting arguments passed from command line..

#not necessarily the best practice for passwords though...

set server [lindex $argv 0]

set command " date "

set pass "password"

 

# connect to server via ssh, login, and su to root

send_user "connecting to $server\n"

spawn ssh -o "StrictHostKeyChecking no" user@$server

 

#login handles cases:

#   login with keys (no user/pass)

#   user/pass

#   login with keys (first time verification)

 

#login handles cases:

#   login with keys (no user/pass)

#   user/pass

#   login with keys (first time verification)

expect {

-re ".*Are.*.*yes.*no.*" {

send "yes\n"

exp_continue

#look for the password prompt

}

 

"*?assword:*" {

send $pass

send "\n"

exp_continue

#The expect command will now return

}

 

"*$ " {

send "sudo su -\n"

exp_continue

#The expect command will now return

}

 

"*password for *" {

send $pass

send "\n"

exp_continue

}

 

"*# " {

send $command

send "\r"

expect "*#"

#interact

}

exp_close

}

send -- "exit\r"