Update su.sh

su.sh

@@ -1,10 +1,11 @@
-#!/usr/bin/expect -f
+#!/usr/bin/expect
 
 set user [lindex $argv 0]
 set password [lindex $argv 1]
 set command [lindex $argv 2]
 
+log_user 1;
 spawn su - $user -c "$command"
 expect "Password:"
 send "$password\r"
-interact
+expect eof