Comments on: UNIX: advanced octal file permissions with chmod http://www.tech-recipes.com/rx/697/unix-advanced-octal-file-permissions-with-chmod/ Computer and technology tutorials and guides Sat, 21 Nov 2009 18:18:34 -0800 http://wordpress.org/?v=2.8.6 hourly 1 By: Mukul http://www.tech-recipes.com/rx/697/unix-advanced-octal-file-permissions-with-chmod/comment-page-1/#comment-13223 Mukul Mon, 06 Jul 2009 03:35:25 +0000 guid-fix-me!#comment-13223 Thnks You............ Thnks You…………

]]> By: Denarius http://www.tech-recipes.com/rx/697/unix-advanced-octal-file-permissions-with-chmod/comment-page-1/#comment-1238 Denarius Mon, 31 Jan 2005 18:02:51 +0000 guid-fix-me!#comment-1238 Unices and applications use the setgid and setuid bits so the octal may need to be 4 digits, especially if using UniCenter or AIX. AIX directories often have setgid set sometimes. Using chmod 0755 or 0750 if hardening is needed. remove setgid from dir with symbolic representaion drwxrws--- ie in octal 2750 change to safer nonsetgid drwxrwx--- ie in octal 0750 with chmod 0750 dirname Usual ownership requirements apply. Note it is possible to get uppercase S appearing in ls -l output if setgid is set but no execute permissions are set. it means setgid is ineffective. Unices and applications use the setgid and setuid bits so the octal may need to be 4 digits, especially if using UniCenter or AIX.
AIX directories often have setgid set sometimes.

Using chmod 0755 or 0750 if hardening is needed.
remove setgid from dir with symbolic representaion
drwxrws— ie in octal 2750 change to safer nonsetgid
drwxrwx— ie in octal 0750
with
chmod 0750 dirname

Usual ownership requirements apply.
Note it is possible to get uppercase S appearing in ls -l output if setgid is set but no execute permissions are set. it means setgid is ineffective.

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