From: Eric Blake
On 07/20/2011 12:05 PM, Reid Thompson wrote:
Is this broken? Or a known windows/cygwin discrepancy? Or am I
missing
something with my posix/windows file permissions settings
If you are running as an administrator, that might explain it. Admins
can alter any file regardless of permissions, in which case [ -w is
telling you the truth that under your current uid, you can indeed write
to the file.
This is a feature of access(file,W_OK), and not a bug.
FWIW, I'm not running as administrator and I'm running 1.7.9, and I'm
seeing the same thing:
$ touch afile
$ chmod 444 afile
$ ls -l
total 0
-r--r--r-- 1 knellis knellis 0 Jul 21 08:36 afile
$ [ -w afile ]&& echo writable || echo not writable
writable
$ echo abc>> afile
$ cat afile
abc
$ ls -l
total 1
-r--r--r-- 1 knellis knellis 4 Jul 21 08:37 afile
$