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From:	"Winston Gutkowski" <winston DOT gutkowski AT eztext DOT com>
To:	"Cygwin" <cygwin AT cygwin DOT com>
Subject:	RE: How to "find" all writable files in a directory tree?
Date:	Fri, 9 May 2003 15:13:52 -0700
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Don't want to flog a dead horse, but if I read the manpages right it seems that
-222
should be true only if the 'w' flag is on in all 3 positions, but
+222
will be true only if the 'w' flag is on in *any* of the 3 positions.

Is this right? Also, I didn't find any refernce to the shorthand +2. Perhaps it's one of those mystical osmosis things...:-)

Winston

-----Original Message-----
From: cygwin-owner AT cygwin DOT com [mailto:cygwin-owner AT cygwin DOT com]On Behalf
Of lists AT m8y DOT org
Sent: Friday, May 09, 2003 15:09
To: cygwin AT cygwin DOT com
Subject: RE: How to "find" all writable files in a directory tree?


On Fri, 9 May 2003, Randall R Schulz wrote:

> 
> At 14:44 2003-05-09, lists AT m8y DOT org wrote:
> >-perm +222 is redundant
> 
> How do you figure? There are 8 combinations of write enable bits that 
> this permission specification matches. For "-perm +2" only one bit is 
> examined and there's only one way for it to succeed.

My reading of the manual is that:
-222 examines bit 2 being on in all of the 3 areas
+2 examines bit 2 being on in all of the 3 areas
222 checks exact permissions 222

> >-perm +mode
> >     Any of the permission bits mode are set for the file.
> >
> >-perm -222 is equivalent to -perm +2
> 
> Either I'm dense or you're mistaken.

I could be mistaken, but -perm +2  has always worked for me.  I'll test it later.


> Are you assuming a FAT file system? Cygwin takes advantage of NTFS 
> permissions when possible (and when the now-default ntsec option of the 
> CYGWIN environment variable is enabled).

Nope, and yes, am aware :)

> Randall Schulz
> 
> 
> 
> 
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