晋太元中，武陵人捕鱼为业。缘溪行，忘路之远近。忽逢桃花林，夹岸数百步，中无杂树，芳草鲜美，落英缤纷。渔人甚异之，复前行，欲穷其林。 　　林尽水源，便得一山，山有小口，仿佛若有光。便舍船，从口入。初极狭，才通人。复行数十步，豁然开朗。土地平旷，屋舍俨然，有良田、美池、桑竹之属。阡陌交通，鸡犬相闻。其中往来种作，男女衣着，悉如外人。黄发垂髫，并怡然自乐。 　　见渔人，乃大惊，问所从来。具答之。便要还家，设酒杀鸡作食。村中闻有此人，咸来问讯。自云先世避秦时乱，率妻子邑人来此绝境，不复出焉，遂与外人间隔。问今是何世，乃不知有汉，无论魏晋。此人一一为具言所闻，皆叹惋。余人各复延至其家，皆出酒食。停数日，辞去。此中人语云：“不足为外人道也。”(间隔 一作：隔绝) 　　既出，得其船，便扶向路，处处志之。及郡下，诣太守，说如此。太守即遣人随其往，寻向所志，遂迷，不复得路。 　　南阳刘子骥，高尚士也，闻之，欣然规往。未果，寻病终。后遂无问津者。 .
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Current File : //scripts/archive_sync_zones
#!/usr/local/cpanel/3rdparty/bin/perl

# cpanel - scripts/archive_sync_zones              Copyright 2022 cPanel, L.L.C.
#                                                           All rights reserved.
# copyright@cpanel.net                                         http://cpanel.net
# This code is subject to the cPanel license. Unauthorized copying is prohibited

use warnings;
use strict;

use Cpanel::OS ();
use Cpanel::Config::Users;
use Cpanel::Config::LoadCpUserFile;
use Cpanel::Umask;

######[ set defaults based on distro/OS ]##########################################################
my $def_basedir   = Cpanel::OS::dns_named_basedir();
my $def_namedconf = '/etc/named.conf';
my $def_backup    = $def_basedir . '/' . 'zone_sync_backup.tar';

open( my $ndc_fh, '<', $def_namedconf ) or die "Could not open $def_namedconf for reading: $!\n";
my @conf_zones = readline($ndc_fh);
close $ndc_fh;

my %zones;
foreach my $line (@conf_zones) {
    if ( $line =~ m/\s*zone\s+["']([\w\-\.]+)["']/ ) {
        next if $1 eq '.';
        my $zone_name = $1;
        next if $zone_name =~ m/^\./;
        next if $zone_name =~ m/\.arpa$/;
        next if ( exists $zones{$zone_name} );    # Seen in another view
        $zones{$zone_name} = 1;

    }
}

if ( opendir my $zone_dh, $def_basedir ) {
    while ( my $file = readdir $zone_dh ) {
        next if $file !~ m/(.+)\.db$/;            # Only look at cPanel managed zone file
        my $zone_name = $1;
        next if $zone_name =~ m/\.arpa$/;
        next if exists $zones{$zone_name};
        $zones{$zone_name} = 1;
    }
    closedir $zone_dh;
}

my ( $live_domains, $dead_domains ) = get_domains_managed_domains();

if ( -e $def_backup ) {
    require Cpanel::Autodie;
    Cpanel::Autodie::chmod( 0600, $def_backup );
}

my $mask = Cpanel::Umask->new(077);
system "tar -cf $def_backup $def_namedconf";

foreach my $zone ( sort keys %zones ) {
    next if ( !$live_domains->{$zone} && !$dead_domains->{$zone} );
    if ( -e $def_basedir . '/' . $zone . '.db' ) {
        system 'tar', '-r', '-f', $def_backup, $def_basedir . '/' . $zone . '.db';
    }
    else {
        print "Unable to archive zone file for $zone\n";
    }
    system '/usr/local/cpanel/scripts/dnscluster', 'synczone', $zone;
}

print "Archive of pre-sync zones located at: ${def_basedir}/zone_sync_backup.tar\n";

sub get_domains_managed_domains {
    my %live_domains;
    my %dead_domains;
    foreach my $user ( Cpanel::Config::Users::getcpusers() ) {

        # Safe because it's only loading from cpusers list.
        my $cpuser_ref = Cpanel::Config::LoadCpUserFile::loadcpuserfile($user);

        if ( $cpuser_ref->{'DOMAIN'} ) {
            $live_domains{ $cpuser_ref->{'DOMAIN'} } = 1;
        }
        if ( ref $cpuser_ref->{'DOMAINS'} eq 'ARRAY' ) {
            my $_tmp = $cpuser_ref->{'DOMAINS'};
            $live_domains{$_} = 1 for @$_tmp;
        }

        if ( ref $cpuser_ref->{'DEADDOMAINS'} eq 'ARRAY' ) {
            my $_tmp = $cpuser_ref->{'DEADDOMAINS'};
            $dead_domains{$_} = 1 for @$_tmp;
        }
    }
    return ( \%live_domains, \%dead_domains );
}

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