The following table shows the privileges necessary for the POSIX administration tasks and the dedicated programs..
Task | Privilege | Command etc. | Input in |
mounting and unmounting POSIX file systems | root privilege | mount, mountall; umount, umountall | POSIX shell |
creating, changing and deleting POSIX file systems | TSOS with root privilege | POSIX installation tool | BS2000 |
Two or more POSIX file systems together can form a file tree. During a POSIX session, at least two file systems are always mounted - the root file system and the /var file system (see section “Initial installation of POSIX”).
The root file system has the highest hierarchy in the file tree. During installation, the BS2000 system administrator must specify which POSIX file system is to be the root file system. The root file system is opened automatically when the POSIX subsystem is started.