Configuration Mode Commands : System Administration Commands : AAA, Role-Based Management, Radius, and TACACS+ Commands : username password
  
username password
Sets the password for the specified user.
Syntax
username <user-id> password <cleartext> [old-password <cleartext>]
Parameters
<user-id>
User login: admin or monitor.
<cleartext>
Password in cleartext format. The password must be at least six characters.
old-password
Specifies the old password.
Usage
The password is entered in cleartext format on the command line.
The old-password option allows you to check the minimum character difference between the old and new passwords under account control management.
Example
amnesiac (config) # username admin password xyzzzZ
Product
SCC, Interceptor, Mobile Controller, SteelHead CX, SteelHead EX, SteelHead-v, SteelHead-c
Related Commands
show usernames, Account Control Management Commands