User::grent(3pm)                                Perl Programmers Reference Guide                                User::grent(3pm)



NAME
       User::grent - by-name interface to Perl's built-in getgr*() functions

SYNOPSIS
        use User::grent;
        $gr = getgrgid(0) or die "No group zero";
        if ( $gr->name eq 'wheel' && @{$gr->members} > 1 ) {
            print "gid zero name wheel, with other members";
        }

        use User::grent qw(:FIELDS);
        getgrgid(0) or die "No group zero";
        if ( $gr_name eq 'wheel' && @gr_members > 1 ) {
            print "gid zero name wheel, with other members";
        }

        $gr = getgr($whoever);

DESCRIPTION
       This module's default exports override the core getgrent(), getgruid(), and getgrnam() functions, replacing them with
       versions that return "User::grent" objects.  This object has methods that return the similarly named structure field name
       from the C's passwd structure from grp.h; namely name, passwd, gid, and members (not mem).  The first three return
       scalars, the last an array reference.

       You may also import all the structure fields directly into your namespace as regular variables using the :FIELDS import
       tag.  (Note that this still overrides your core functions.)  Access these fields as variables named with a preceding
       "gr_".  Thus, "$group_obj->gid()" corresponds to $gr_gid if you import the fields.  Array references are available as
       regular array variables, so "@{ $group_obj->members() }" would be simply @gr_members.

       The getpw() function is a simple front-end that forwards a numeric argument to getpwuid() and the rest to getpwnam().

       To access this functionality without the core overrides, pass the "use" an empty import list, and then access function
       functions with their full qualified names.  On the other hand, the built-ins are still available via the "CORE::" pseudo-
       package.

NOTE
       While this class is currently implemented using the Class::Struct module to build a struct-like class, you shouldn't rely
       upon this.

AUTHOR
       Tom Christiansen



perl v5.12.4                                               2011-06-01                                           User::grent(3pm)