For regular operation, the UNIX user who calls CONTROL must satisfy some conditions.
To be able to call CONTROL, the user must be authorized to write into the directory that during installation was denoted as RUNDIRECTORY, because the CONTROL protocol files are stored there (see Section Protocol Files).
The UNIX user who calls CONTROL must be authorized to create crontab files to be able to define automatic backup proeedures by using the Backup/Schedule Manager (see CONTROL manual).
To ensure a correct administration of such automatic backup runs, CONTROL must always be called by the same UNIX user.