Found by torture test.
Guenther
open(GROUP, ">$nss_wrapper_group") or die("Unable to open $nss_wrapper_group");
print GROUP "nobody:x:65533:
nogroup:x:65534:nobody
open(GROUP, ">$nss_wrapper_group") or die("Unable to open $nss_wrapper_group");
print GROUP "nobody:x:65533:
nogroup:x:65534:nobody
$unix_name-group:x:$unix_gids[0]:
";
close(GROUP);
$unix_name-group:x:$unix_gids[0]:
";
close(GROUP);
cat >$NSS_WRAPPER_GROUP<<EOF
nobody:x:65533:
nogroup:x:65534:nobody
cat >$NSS_WRAPPER_GROUP<<EOF
nobody:x:65533:
nogroup:x:65534:nobody
$USERNAME-group:x:$GROUPID:
EOF
$USERNAME-group:x:$GROUPID:
EOF