phpMan > perldoc > User::grent

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(), getgrgid(), 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 getgr() function is a simple front-end that forwards a numeric argument to getgrgid() and
    the rest to getgrnam().

    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