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/python2.7
# findlinksto
#
# find symbolic links to a path matching a regular expression
import os
import sys
import re
import getopt
def main():
try:
opts, args = getopt.getopt(sys.argv[1:], '')
if len(args) < 2:
raise getopt.GetoptError('not enough arguments', None)
except getopt.GetoptError, msg:
sys.stdout = sys.stderr
print msg
print 'usage: findlinksto pattern directory ...'
sys.exit(2)
pat, dirs = args[0], args[1:]
prog = re.compile(pat)
for dirname in dirs:
os.path.walk(dirname, visit, prog)
def visit(prog, dirname, names):
if os.path.islink(dirname):
names[:] = []
return
if os.path.ismount(dirname):
print 'descend into', dirname
for name in names:
name = os.path.join(dirname, name)
try:
linkto = os.readlink(name)
if prog.search(linkto) is not None:
print name, '->', linkto
except os.error:
pass
if __name__ == '__main__':
main()