The 'cal-admin' script is useful for adding/removing CAL users as well as other related options. Invoking the script with the --help option provides more information:

• adds a user with the given attributes to the CAL domain

cal-admin --adduser [-u uname] [-f 'Given Surname'] [-s 'Surname'] [-g 'Given'] [-c /krb5/ccache]

• gives the user uname membership in group gname

cal-admin --addtogroup [-u uname] [-g gname] [-c /krb5/ccache]

• drops the user uname from group gname

cal-admin --dropfromgroup [-u uname] [-g gname] [-c /krb5/ccache]

• add workstation to the list of CAL Configured Workstations

cal-admin --addworkstation [-w workstation] [-c /krb5/ccache]

• remove workstation from the list of CAL Configured Workstations

cal-admin --dropworkstation [-w workstation] [-c /krb5/ccache]

• remove workstation from the list of CAL Configured Workstations

cal-admin --dropuser [-u uname] [-y] [-c /krb5/ccache]

* When removing user accounts, remove the user on all relevant mail lists:

The standard accounts are the 'announce' and 'astro-events'. To remove a user from the mail lists, access the appropriate mail list ​here. Login as an administrator under the subscriber list at the bottom of the web page. Select the appropriate user account and use the 'unsubscribe' option to remove the user.