The USERMOD command allows you to add or remove user account privileges or tags.
bruce_dev /> help usermod
+A,-A Add or remove Administrator rights
+C,-C Add or remove Control rights
+D,-D Disable or Enable the account
Modifies user privileges.
The Series 4 uses three different tags: Administrator, Control, and Disabled. These are described under the USERS command topic. Basically accounts tagged as Administrator can do everything. An account tagged for Control can only manipulate I/O status. And, a Disabled account is just that, disabled.
The USERMOD command actually violates the JANOS standard for command options. This command uses the plus sign ‘+’ as well as the dash ‘-‘ to designate an option. This is a legacy thing left over from the Series 3.
The following command disables the ‘user’ account by adding the Disabled tag:
usermod +d user
This would re-enable the account by removing the Disabled tag:
usermod -d user
Note that the USERMOD command can only modify a single user. So you cannot add a tag to a set of users. You must also specify a user.