RFE for id(1) -- ability to specify uid/gid values on the command line (reverse lookups)

[Greg Ercolano]

        It would be great if GNU's id(1) could accept numeric uid/gid arguments
        to allow admins to verify reverse lookups for specific uid/gid values,
        similar to how OSX/FreeBSD id(1) does, eg:

[freebsd] $ id 0
uid=0(root) gid=0(wheel) groups=0(wheel), 2(kmem), 3(sys), 4(tty), 5(operator), 
20(staff), 31(guest), 820(pgp), 861(mysql), 862(spamd), 863(postgres), 
864(clamav), 1000(users)

[osx 10.4] $ id 0
uid=0(root) gid=0(wheel) groups=0(wheel), 1(daemon), 2(kmem), 3(sys), 4(tty), 
29(certusers), 5(operator), 80(admin), 20(staff)

[gnu/linux] $ id 0
id: 0: No such user

        This would help admins troubleshoot problems where sometimes
        forward lookups work normally, but reverse lookups have failures.
        (eg. due to the complexities that nsswitch/pam/LDAP combos introduce)