No username is specified. Please specify a username.
If you are using the chgpass command to change the password of a current user, the username must be specified in the command line.
The syntax for the chgpass command is: chgpass [-s] [server] /username] where: [-s] forces the password to be a Microsoft style password. [server] the name of the server on which you want to set or change the password. [/username] the name of the user whose you want to change.