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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#!/usr/bin/perl
# This example demonstrates how to use the debugging features in
#expect. They're reasonably straghtforward.
#
# There are 3 basic ways you can debug a script:
#
# 1. Log_Stdout
#
# By setting $Expect::Log_Stdout you control whether or not processes
#will echo to the screen or not. Having it turned on can be helpful so you
#can watch what a process is doing. Alternately, for a process that is already
#running you can do $process->log_stdout(1); which will turn on process
#output for the process from that instant on. $process->log_stdout(0) will
#turn it off.
# By default $Expect::Log_Stdout == 1. Initialized handles (discussed
#later) may also echo to STDOUT, but they don't do so by default. You have
#to manually tell them to echo. You wouldn't want your log file jabbering at
#you would you? Anyway, that will make sense later.
#
# 2. Exp_Internal
#
# Setting $Exp_Internal=1 (or $process->exp_internal(1)) will output
#pattern matching information for expect() calls to STDERR. You can trap
#this by doing "perl expect_script.pl 2>debug.out" if you are using any of
#the bourne-ish shells. For people who use csh, don't. "exec bash" will take
#care of that straightaway. This is handy so program output and debugging output
#don't go to the same place.
#
# 3. Debug
#
# Setting $Expect::Debug = debug level(or $process->debug(debug level))
#will show other stuff, such as pids, output during interaction, and other
#miscellaneous output not covered by the above two items. In combination with
#Exp_Internal you can capture a lot of good information about what your script
#is doing. Debugging info also goes to STDERR.
#
#
# This example will show (lots) of debugging info.
use Expect;
$Expect::Log_Stdout=1;
$Expect::Debug=3;
$Expect::Exp_Internal=1;
# lpc is a bsd printer control program. It's included in every Unix I
# deal with.
$lpc = Expect->spawn("lpc");
$lpc->expect(30,"lpc> ") && print $lpc "stat\r";
$lpc->hard_close();