From: Andrey Repin[] Sent: Thursday 13 March 2014 23:38 To: PANEL Vincent (CIS/SIN); Subject: Re: Getting groups you belong to in perl
>Greetings, PANEL Vincent (CIS/SIN)! >> Don't know if this list is more appropriate than the Perl one but my >> question is actually about porting a Perl script to Cygwin. I need to >> check if the current user running the script belongs to a pre-defined group. >> Under *nix, I get the list of users belonging to the group and see if >> the current user is in this list. >How exactly you are doing this? (I hope you're not reading it from >/etc/group, because that file may not exist at all, or contain exactly >zero relevant >information.) I'm using standard perl commands (getgrnam, getlogin, etc... : http://perldoc.perl.org/5.14.2/functions/getgrnam.html) which are probably using standard C libraries in the background (I hope). The doc explicitly says "The $members value returned by getgr*() is a space-separated list of the login names of the members of the group" but it's always empty under Cygwin. >> Cygwin doesn't allow this way of working. >Oh... ? Yes indeed, the standard perl functions work but they always return an empty list of group members, similar to mkgroup. >> I found out by reading the thread "Why mkgroup does not list group members?" >> on this mailing list (1 message on Mon, 13 May 2013 20:29:52, for instance). >> I would like to use perl commands without launching external >> commands, if possible. The way I've found until now is by using the output >> of the "id" >> command but I was wondering if there was another way to do it. How is "id" >> command working by the way ? >You can check the sources of it, it's really a very simple tool. >(It's coreutils, by the way. >http://mirrors.kernel.org/sourceware/cygwin/x86/release/coreutils/ ) I will do it. -- WBR, Andrey Repin () 14.03.2014, <02:12> Sorry for my terrible english... ________________________________ ***** Disclaimer ***** http://www.belgacom.be/maildisclaimer -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple