Active Directory command to reset password from command line.

[rimshot609]

I'm working on a script to reset an AD password from the command prompt. Here is what i've been able to find through Google:

dsquery user -samid johndeer | dsmod user -pwd abc$1234 mustchpwd no

I'm wanted to know what happens if you send that command without a username like this:

dsquery user -samid | dsmod user -pwd abc$1234 mustchpwd no


I just want to be sure I don't screw anything up if a UID is not present.