用pspasswd修改本地/远程管理员密码

PsPasswd changes passwords on a local or remote system.

Usage: pspasswd [//[computer[,computer,[,...]|Domain]|@file] [-u Username [-p Password]]] Username [NewPassword]
     computer    Direct PsPasswd to perform the command on the remote
                 computer or computers specified. If you omit the computer
                 name PsPasswd runs the command on the local system,
                 and if you specify a wildcard (//*), PsPasswd runs the
                 command on all computers in the current domain.
     @file       PsPasswd will change the password on the computers listed
                 in the file.
     -u          Specifies optional user name for login to remote
                 computer.
     -p          Specifies optional password for user name. If you omit this
                 you will be prompted to enter a hidden password.
     Username    Specifies name of account for password change.
     NewPassword New password. If ommitted a NULL password is applied.

pspasswd也是SysInternal工具包之一，可以从微软免费下载。个人觉得主要有两点方便：一是便于管理不在域中的远程系统；二是简化了某些管理脚本。