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　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。 . Prv8 Shell

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Current File : //usr/share/doc/rsync/support/munge-symlinks

#!/usr/bin/perl
# This script will either prefix all symlink values with the string
# "/rsyncd-munged/" or remove that prefix.

use strict;
use Getopt::Long;

my $SYMLINK_PREFIX = '/rsyncd-munged/';

my $munge_opt;

&GetOptions(
    'munge' => sub { $munge_opt = 1 },
    'unmunge' => sub { $munge_opt = 0 },
    'all' => \( my $all_opt ),
    'help|h' => \( my $help_opt ),
) or &usage;

&usage if $help_opt || !defined $munge_opt;

my $munged_re = $all_opt ? qr/^($SYMLINK_PREFIX)+(?=.)/ : qr/^$SYMLINK_PREFIX(?=.)/;

push(@ARGV, '.') unless @ARGV;

open(PIPE, '-|', 'find', @ARGV, '-type', 'l') or die $!;

while (<PIPE>) {
    chomp;
    my $lnk = readlink($_) or next;
    if ($munge_opt) {
	next if !$all_opt && $lnk =~ /$munged_re/;
	$lnk =~ s/^/$SYMLINK_PREFIX/;
    } else {
	next unless $lnk =~ s/$munged_re//;
    }
    if (!unlink($_)) {
	warn "Unable to unlink symlink: $_ ($!)\n";
    } elsif (!symlink($lnk, $_)) {
	warn "Unable to recreate symlink: $_ -> $lnk ($!)\n";
    } else {
	print "$_ -> $lnk\n";
    }
}

close PIPE;
exit;

sub usage
{
    die <<EOT;
Usage: munge-symlinks --munge|--unmunge [--all] [DIR|SYMLINK...]

--munge      Add the $SYMLINK_PREFIX prefix to symlinks if not already
             present, or always when combined with --all.
--unmunge    Remove one $SYMLINK_PREFIX prefix from symlinks or all
             such prefixes with --all.

See the "munge symlinks" option in the rsyncd.conf manpage for more details.
EOT
}

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