Managing Systems and Workgroups: A Guide for HP-UX System Administrators

Administering a System: Managing System Security
Managing Access to Files and Directories
Chapter 8 753
Managing Access to Files and Directories
On a traditional UNIX system, file access is controlled by granting
permissions to the file owner, the file’s group, and all other users. These
can be set with the chmod command and displayed with the ll (ls -l)
command. (See chmod (1) and ls (1).
Access Control Lists (ACLs) give you a more precise way to control access
to files than you have with traditional UNIX file permissions. ACLs allow
you to grant or restrict file access in terms of individual users and
specific groups, in addition to the traditional control.
Both HFS and JFS file systems support ACLs, but they use different
mechanisms and have somewhat different semantics.
• HFS ACLs are described in “Using HFS Access Control Lists (ACLs)”
on page 754.
• JFS ACLs are described in “Using JFS Access Control Lists (ACLs)”
on page 758.
• See “Comparison of JFS and HFS ACLs” on page 769 for more about
the differences.