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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 v5.16.2                                     2012-08-26                                 User::grent(3pm)