


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


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 get-
       grent(), 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 refer-
       ence.

       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 func-
       tion 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.





2000-04-06                 perl v5.6.1                          1





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


AUTHOR
       Tom Christiansen























































2000-04-06                 perl v5.6.1                          2


