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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#!/bin/sh
#
# This script processes strace -ff -tt output. It merges the contents of all
# STRACE_LOG.PID files and sorts them, printing result on the standard output.
#
# Copyright (c) 2012-2021 The strace developers.
#
# SPDX-License-Identifier: LGPL-2.1-or-later
show_usage()
{
cat <<__EOF__
Usage: ${0##*/} STRACE_LOG
Finds all STRACE_LOG.PID files, adds PID prefix to every line,
then combines and sorts them, and prints result to standard output.
It is assumed that STRACE_LOGs were produced by strace with -tt[t]
option which prints timestamps (otherwise sorting won't do any good).
__EOF__
}
dd='\([0-9][0-9]\)'
ds='\([0-9][0-9]*\)'
if [ $# -ne 1 ]; then
show_usage >&2
exit 1
elif [ "$1" = '--help' ]; then
show_usage
exit 0
fi
logfile=$1
iterate_logfiles()
{
local file suffix
for file in "$logfile".*; do
[ -f "$file" ] || continue
suffix=${file#"$logfile".}
[ "$suffix" -gt 0 ] 2> /dev/null ||
continue
"$@" "$suffix" "$file"
done
}
max_suffix_length=0
process_suffix()
{
local suffix len
suffix="$1"; shift
len=${#suffix}
if [ $len -gt $max_suffix_length ]; then
max_suffix_length=$len
fi
}
process_logfile()
{
local suffix file pid
suffix="$1"; shift
file="$1"; shift
pid=$(printf "%-*s" $max_suffix_length $suffix)
# Some strace logs have last line which is not '\n' terminated,
# so add extra newline to every file.
# Empty lines are removed later.
sed -n "s/^\($dd:\)\?\($dd:\)\?\($ds\.\)\?$ds /\2\4\6\7 $pid \0/p" < "$file"
echo
}
iterate_logfiles process_suffix
[ $max_suffix_length -gt 0 ] || {
echo >&2 "${0##*/}: $logfile: strace output not found"
exit 1
}
iterate_logfiles process_logfile |
sort -s -n -k1,1 |
sed -n 's/^[0-9][0-9]* //p' |
grep -v '^$'
rc=$?
[ $rc -eq 1 ] &&
echo >&2 "${0##*/}: $logfile: strace output not found"
exit $rc