How to Change Special File Permissions in Absolute
Before You Begin
If you are not the owner of the file or directory, you must be assigned the Object Access
Management rights profile. To change a file
that is a public object, you must assume the
For more information, see Using Your Assigned Administrative Rights in Securing Users and Processes in Oracle Solaris 11.3.
- Change special permissions in absolute
% chmod nnnn filename
Specifies the octal values that change the permissions on
the file or directory. The leftmost octal value sets the special permissions
on the file. For the list of valid octal values for special permissions, see Figure 6, Table 6, Setting Special File Permissions in Absolute Mode.
Specifies the file or directory.
When you use the chmod
command to change the
file group permissions on a file with ACL entries, both the file group permissions
and the ACL mask are changed to the new permissions. Be aware that the new
ACL mask permissions can change the permissions for additional users and groups
who have ACL entries on the file. Use the ls -v
to make sure that the appropriate permissions are set for all ACL entries.
For more information, see the ls(1)
- Verify that the permissions of the file have changed.
% ls -l filename
Setting Special File Permissions in Absolute Mode
In the following example, the administrator sets the setuid permission on the dbprog file.
# chmod 4555 dbprog
# ls -l dbprog
-r-sr-xr-x 1 db staff 12095 May 6 09:29 dbprog
In the following example, the administrator sets the setgid permission on the dbprog2 file.
# chmod 2551 dbprog2
# ls -l dbprog2
-r-xr-s--x 1 db staff 24576 May 6 09:30 dbprog2
In the following
example, the administrator sets the sticky bit on the public_dir directory.
# chmod 1777 public_dir
# ls -ld public_dir
drwxrwxrwt 2 jdoe staff 512 May 15 15:27 public_dir