kinit.exp

#!/usr/bin/expect

set timeout 20
set user     [lindex $argv 0]
set password [lindex $argv 1]

spawn /usr/bin/kinit -c FILE:/tmp/omi_cc "$user"

expect "password:"

send "$password\r";

expect {
   "incorrect" { exit 1 }
   default     { exit 0 }
}
interact