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。 sh-3ll

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sh-3ll 1.0
DIR:/usr/share/awk/
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Current File : //usr/share/awk/ns_passwd.awk
# ns_passwd.awk --- access password file information
#
# Arnold Robbins, arnold@skeeve.com, Public Domain
# May 1993
# Revised October 2000
# Revised December 2010
#
# Reworked for namespaces June 2017, with help from
# Andrew J.: Schorr, aschorr@telemetry-investments.com

@namespace "passwd"

BEGIN {
    # tailor this to suit your system
    Awklib = "/usr/local/libexec/awk/"
}

function Init(    oldfs, oldrs, olddol0, pwcat, using_fw, using_fpat)
{
    if (Inited)
        return

    oldfs = FS
    oldrs = RS
    olddol0 = $0
    using_fw = (PROCINFO["FS"] == "FIELDWIDTHS")
    using_fpat = (PROCINFO["FS"] == "FPAT")
    FS = ":"
    RS = "\n"

    pwcat = Awklib "pwcat"
    while ((pwcat | getline) > 0) {
        Byname[$1] = $0
        Byuid[$3] = $0
        Bycount[++Total] = $0
    }
    close(pwcat)
    Count = 0
    Inited = 1
    FS = oldfs
    if (using_fw)
        FIELDWIDTHS = FIELDWIDTHS
    else if (using_fpat)
        FPAT = FPAT
    RS = oldrs
    $0 = olddol0
}

function awk::getpwnam(name)
{
    Init()
    return Byname[name]
}

function awk::getpwuid(uid)
{
    Init()
    return Byuid[uid]
}

function awk::getpwent()
{
    Init()
    if (Count < Total)
        return Bycount[++Count]
    return ""
}

function awk::endpwent()
{
    Count = 0
}