drush user-password
(Re)Set the password for the user account with the specified name.
Drush Command
drush user-password
Arguments
name : The name of the account to modify.
Aliases
drush upwd
Options
--password : [object Object]
Examples
Set the password for the username someuser. @see xkcd.com/936
drush user-password someuser --password="correct horse battery staple"