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 : //usr/share/doc/perl-Expect/tutorial/6.B.modem-init
#!/usr/bin/perl
#	This is a very brief script that demonstrates send_slow(). This
#command is chiefly for talking to modems and the like where if you send
#it stuff too fast it can get mad at you.
#	Also demonstrated is how to talk to a bidirectional device
#handle.
#
#	This example has been changed in 1.05 so that it actually works. :-)

use Expect;

$device="/dev/modem" unless $device = shift(@ARGV);

# open the device
open(DEVICE,"+>$device") || die "Couldn't open $device, $!\n";

# Expectize it. note the \* which we do because we didn't use the OO
# method of opening the device.
$modem=Expect->exp_init(\*DEVICE);
# Let's watch the output. Once again, output isn't automatically
# watched since it was an initialized handlde and not a process.
$modem->log_stdout(1);

# Put it in raw mode w/ no echoing so it will operate as expected.
$modem->exp_stty('raw','-echo');

# Send it an ATZH0\r to reset its state.
print "Initializing modem\n";
$modem->send_slow(.5,"ATZH0\r");

# How about we look for an OK?
$modem->expect(30,'-re','^OK\r?$')|| warn "Never got OK from modem\n";
print "Modem initialized.\n";

# Now let's interact with it so the user can talk to it, dial it out,
# whatever. This is basically a poor man's term program.
# When you interact() with a handle it puts STDIN in raw mode so
# you are assured of interacting cleanly, no escape chars, etc.
# This is usually what you want. Here however it's nice to be able to
# escape from the session without doing any extra work. So let's make
# an escape character of ^W.
print "Beginning interaction, escape character is ^W.\n";
$modem->interact(\*STDIN,"\027");

# Done? Reset the modem, close the handle.
print $modem "+++";
sleep 3;
print $modem "ATZH0\r";
sleep 1;
# Grab any output ready on the handle, toss it.
$modem->expect(0);
$modem->hard_close();

haha - 2025