diff --git a/expect-ssh.sh b/expect-ssh.sh
index 8747824..1ce5cf9 100755
--- a/expect-ssh.sh
+++ b/expect-ssh.sh
@@ -1,6 +1,6 @@
 #!/usr/bin/expect
 
-# Usage: expect this.sh [hostname] [username] [password]
+# Usage: expect this.sh [hostname] [username] [pwdadot] [pwdroot]
 
 set timeout 30
 spawn ssh [lindex $argv 1]@[lindex $argv 0] -p 22
@@ -12,8 +12,8 @@ expect {
   ":~"
   {send "su\n";exp_continue}
   "Password:"
-#  {send "[lindex $argv 3]\ncd /faronear\n"}
+  {send "[lindex $argv 3]\ncd /faronear\n"}
 #  "密码："
-  {send "[lindex $argv 2]\ncd /faronear\n"}
+#  {send "[lindex $argv 3]\ncd /faronear\n"}
 }
 interact