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　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。 . Prv8 Shell

Server : Apache
System : Linux srv.rainic.com 4.18.0-553.47.1.el8_10.x86_64 #1 SMP Wed Apr 2 05:45:37 EDT 2025 x86_64
User : rainic ( 1014)
PHP Version : 7.4.33
Disable Function : exec,passthru,shell_exec,system
Directory : /etc/NetworkManager/dispatcher.d/

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Current File : //etc/NetworkManager/dispatcher.d/20-chrony-dhcp

#!/bin/sh
# This is a NetworkManager dispatcher script for chronyd to update
# its NTP sources passed from DHCP options. Note that this script is
# specific to NetworkManager-dispatcher due to use of the
# DHCP4_NTP_SERVERS environment variable.

export LC_ALL=C

interface=$1
action=$2

helper=/usr/libexec/chrony-helper
default_server_options=iburst
server_dir=/run/chrony-helper

dhcp_server_tmpfile=$server_dir/tmp-nm-dhcp.$interface
dhcp_server_file=$server_dir/nm-dhcp.$interface
# DHCP4_NTP_SERVERS is passed from DHCP options by NetworkManager.
nm_dhcp_servers=$DHCP4_NTP_SERVERS

[ -f /etc/sysconfig/network ] && . /etc/sysconfig/network
[ -f /etc/sysconfig/network-scripts/ifcfg-"${interface}" ] && \
    . /etc/sysconfig/network-scripts/ifcfg-"${interface}"

add_servers_from_dhcp() {
    rm -f "$dhcp_server_file"

    # Remove servers saved by the dhclient script before it detected NM.
    rm -f "/var/lib/dhclient/chrony.servers.$interface"

    # Don't add NTP servers if PEERNTP=no specified; return early.
    [ "$PEERNTP" = "no" ] && return

    # Create the directory with correct SELinux context.
    $helper create-helper-directory > /dev/null 2>&1

    for server in $nm_dhcp_servers; do
        echo "$server ${NTPSERVERARGS:-$default_server_options}" >> "$dhcp_server_tmpfile"
    done
    [ -e "$dhcp_server_tmpfile" ] && mv "$dhcp_server_tmpfile" "$dhcp_server_file"

    $helper update-daemon > /dev/null 2>&1 || :
}

clear_servers_from_dhcp() {
    if [ -f "$dhcp_server_file" ]; then
        rm -f "$dhcp_server_file"
        $helper update-daemon > /dev/null 2>&1 || :
    fi
}

if [ "$action" = "up" ] || [ "$action" = "dhcp4-change" ]; then
    add_servers_from_dhcp
elif [ "$action" = "down" ]; then
    clear_servers_from_dhcp
fi

exit 0

haha - 2025