User::grent(3) Perl Programmers Reference Guide User::grent(3)NAMEUser::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.
16/Sep/1999 perl 5.005, patch 03 1
User::grent(3) Perl Programmers Reference Guide User::grent(3)AUTHOR
Tom Christiansen
16/Sep/1999 perl 5.005, patch 03 2
