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From:	"Michael Kairys" <kairys AT comcast DOT net>
Subject:	Re: Intermittent perl crash (Attn: coreutils and bash maintainer)
Date:	Tue, 18 Dec 2007 11:53:01 -0500
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"Igor Peshansky" <pechtcha AT cs DOT nyu DOT edu> wrote in message 
news:Pine DOT GSO DOT 4 DOT 63 DOT 0712181009420 DOT 28181 AT access1 DOT cims DOT nyu DOT edu...

> I'm guessing one can reconstruct your permissions as follows:
>
> $ cd /tmp
> $ mkdir nw
> $ setfacl -m g:Users:rwx nw
> $ chmod a-rwx nw
> $ ls -ld nw
> d---------+ 2 igor root 0 Dec 18 10:08 nw/
> $ touch nw/foo
> $ ls -l nw/foo
> -rw------- 1 igor root 0 Dec 18 10:08 nw/foo
> $ if [ -w nw ]; then echo "Yes"; else echo "No"; fi
> No
> $

Not sure about the setfacl but I note that if I repeat your sequence I get 
"dr-xr-xr-x", which is what all my dirs look like:

1 > cd /tmp
2 > mkdir nw
3 > setfacl -m g:Users:rwx nw
4 > chmod a-rwx nw
5 > ls -ld nw
dr-xr-xr-x 2 michael None 0 Dec 18 11:46 nw
6 > touch nw/foo
7 > ls -l nw/foo
-rw-r--r-- 1 michael None 0 Dec 18 11:47 nw/foo
8 > if [ -w nw ]; then echo "Yes"; else echo "No"; fi
No

> One solution is, of course, "chmod u+rwx /tmp".

Well, this has no effect for me:

9 > ls -ld /tmp
dr-xr-xr-x 9 michael None 245760 Dec 18 11:46 /tmp
10 > chmod u+rwx /tmp
11 > ls -ld /tmp
dr-xr-xr-x 9 michael None 245760 Dec 18 11:46 /tmp




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