If you are planning to modify an object in the AD using command-line, name the tool (command) you're going to use?

Dsadd : Add users, groups, computers, contacts, and organizational units.

Dsmod : To Modify an existing object users, groups, computers, servers, contacts, and organizational units.

Use DS command

install support tools and try with

dsmod *** for AD user from command prompt 

powershell is more robust to do in server2k8 and2k12

Dsmod: Modify an existing object of a specific type in the directory. The types of objects that can be modified are: users, groups, computers, servers, contacts, and organizational units.

you can use DS command to add, del, modify the AD object.

go with syed kalif answer