Shell Programming and Scripting

expect: spawn id exp5 not open
    while executing
"expect "$" { send "sudo su -\r" }"

#!/usr/bin/expect -f
set host [lindex $argv 0]
#set user [lindex $argv 1]
spawn scp -r /home/uname/dhclient/  upupmadm@$host:/home/uname/
sleep 5
expect "*password: " { send "******\r"; exp_continue }
#expect "$"
spawn ssh uname@$host
sleep 5
#expect "yes/no"
#send "yes\r"
expect "*password: " { send "******\r"; exp_continue }
interact
expect "$" { send "sudo su -\r" }
expect "#" { send "cd /home/uname/dhclient/\r" }
expect "#" { send "./upgrade.sh" }
expect "#"
send "exit\r"
 send "exit\r"