GNU bug report logs - #25223
chmod +w does not work

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From: Pádraig Brady <P <at> draigBrady.com>
To: Eugen Dedu <eugen.dedu <at> univ-fcomte.fr>, 25223 <at> debbugs.gnu.org
Subject: bug#25223: chmod +w does not work
Date: Sun, 18 Dec 2016 17:34:22 +0000

tag 25223 notabug
close 25223
stop

On 18/12/16 12:37, Eugen Dedu wrote:
> Hi,
> 
> chmod +w file does not work:
> 
> snoopy:~$ touch ff
> snoopy:~$ ls -l ff
> -rw-r--r-- 1 ededu ededu 0 Dec 18 13:31 ff
> snoopy:~$ chmod +w ff
> snoopy:~$ ls -l ff
> -rw-r--r-- 1 ededu ededu 0 Dec 18 13:31 ff
> snoopy:~$ chmod +x ff
> snoopy:~$ ls -l ff
> -rwxr-xr-x 1 ededu ededu 0 Dec 18 13:31 ff
> snoopy:~$ chmod --version
> chmod (GNU coreutils) 8.26

From the man page, taking particular note of the last line...

"A  combination  of the letters ugoa controls which users' access to the
file will be changed: the user who owns it  (u),  other  users  in  the
file's group (g), other users not in the file's group (o), or all users
(a).  If none of these are given, the effect is as if (a)  were  given,
but bits that are set in the umask are not affected."

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