z/OS UNIX System Services › Controlling Access to USS › Create the Superuser Administrator ACID

Create the Superuser Administrator ACID

The USS and utilities installation process must have superuser authority to create directories in the Hierarchical File System (HFS). Assigning superuser authority to an ACID does not give the user any authority within CA Top Secret

Important! Use caution when assigning ACIDs superuser authority. A superuser can access any UNIX file in the file system.

To create a superuser administrator ACID

1. Enter:

   TSS ADD(SYSPROG1) UID(0)
   

   SYSPROG1 is defined as a superuser.

2. Enter:

   TSS ADD(SYSPROG1) GROUP(OMVSGRP)
                     DFLTGRP(OMVSGRP)
   

   SYSPROG1 is defined as a member of a group. SYSPROG1 can sign on and be validated as a member of group OMVSGRP. The ACIDs of group OMVSGRP are a special subset of users who perform system‑related tasks.