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/PackageKit/pk-upgrade-distro.sh
#!/bin/sh
# Copyright (C) 2008 Richard Hughes <richard@hughsie.com>
#
# This file is designed to be run by a not privileged user, NOT ROOT.
# The tool which is invoked will have to use consolehelper or PolicyKit
# if privileged changes are required.
#
# Licensed under the GNU General Public License Version 2
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.

DISTRO=""
if [ -e /usr/bin/lsb_release ]; then
	DISTRO=$(/usr/bin/lsb_release -is)
fi

# Fedora uses preupgrade
if [ -e /etc/fedora-release ]; then
	if [ -e /usr/bin/preupgrade ]; then
		/usr/bin/preupgrade
	else
		xdg-open http://fedoraproject.org/en/get-fedora
	fi
elif [ "$DISTRO" = "Ubuntu" ]; then
	if [ -e /usr/share/pyshared/UpdateManager/DistUpgradeFetcherKDE.py ] && [ "$DESKTOP" = "kde" ]; then
		PATH=`kde4-config --path exe` kdesu -- "python /usr/share/pyshared/UpdateManager/DistUpgradeFetcherKDE.py"
	elif [ -e /usr/bin/do-release-upgrade ]; then
			gksu "/usr/bin/do-release-upgrade -m desktop"
	elif [ "$DESKTOP" = "kde" ]; then
		xdg-open http://www.kubuntu.org/getkubuntu
	else
		xdg-open http://www.ubuntu.com/getubuntu
	fi
elif [ -e /etc/SuSE-release ] && [ -x /usr/sbin/wagon ]; then
	xdg-su -c /usr/sbin/wagon
else
	TITLE="System is not recognised"
	TEXT="Your distribution was not recognised by the upgrade script.\nPlease file a but in your distribution bug tracker under the component PackageKit."
	if [ "$DESKTOP" = "kde" ]; then
		PATH=`kde4-config --path exe` kdialog --title "$TITLE" --sorry "$TEXT"
	# do not dep on zenity in build scripts
	elif [ "`which zenity 2> /dev/null > /dev/null; echo $?`" -eq 0 ]; then
		zenity --warning --title $TITLE --text $TEXT
	else
		xmessage $TEXT
	fi
fi

haha - 2025