[原創] 簡單建立 dns 的 shell script域名服务器教程 -免费技术教程下载中心

              摘要：[原創] 簡單建立 dns 的 shell script
常碰到一些朋友抱怨說 linux 的  dns 很難設。
但經我個人觀察，100% 都是打錯字或格式疏忽而已~~~~  ^_^

這裡我寫了隻 shell script ，可以幫助建立簡單的正解及反解檔，
然後將剩下的"簡單"的部份，則自己來修改了...

download:
http://www.study-area.org/linux/src/sample_dns.sh.tgz

初版原始碼：
[code:1:212a63ac08]#!/bin/bash
set -u

# purpose: make a sample dns for RedHat like system
# author: netman<netman@study-area.org>
# date: 2003-12-05
# version: v.0.1

#-- CAVEATE --#
# 1) script has been tested only on RedHat 8.x/9.0 platform.
# 2) needs root privilege to run.
# 3) only one forward zone and one reverse zone will be created.
#       if no specified zone names are given, script will assume to
#       use the current DNS domain(using text.cxm instead if not found) for
#       forward zone's name, and the Class-C ipv4 subnet of current IP for
#       reverse zone's name.
# 4) the script can NOT determine whether you have the proper delegation,
#       you should manually delete ANY non-authorized zone settings.
# 5) only followint Resource Record will be create by this script:
#       * SOA (both forward & reverse)
#       * NS (both forward & reverse)
#       * MX (forward only)
#       * A (forward only)
#       * CNAME (www & ftp, forward only)
#       * PTR (reverse only)
# 6) a backup for named.conf and db directory will be made to /root/backup.
#       backup will be performed once during the first running only,
#       unless -b options is given.
# 7) absolutely NO WARRANTY while running this script.

#-- CHANGE LOG --#
# 1) 2003-12-05 v0.01 by netman
#       * first version.

options=hrstbf

named_conf=/etc/named.conf
db_dir=/var/named
bak_dir=/root/backup
wtty=$(ps | grep $$ | tail -n 1 | awk '{print $2}')
to_file=
backup=
update=

#-- get zone info --#
fwd_zone=$(hostname -d)
fwd_zone=${fwd_zone:-test.cxm}
host_if=eth0
host_ip=$(ifconfig | grep -A1 $host_if | awk '/inet/{print $2}' | sed 's/^.*://')
host_ip=${host_ip:-192.168.1.1}
rev_zone="$(echo ${host_ip%.*} | awk -F. '{print $3"."$2"."$1}').in-addr.arpa"
ns_ptr=${host_ip##*.}
serial_nu=$(date +%Y%m%d)01
opt_ttl=86400

function print_usage {
        echo "-------------------------------------------------------------"
        echo "Script Name:"
        echo -e "\t${0##*/}"
        echo "Options:"
        echo -e "\t-h\tprint this help"
        echo -e "\t-r\trun the script with default values"
        echo -e "\t-s\tspecify your own zone names"
        echo -e "\t-t\ttest only"
        echo -e "\t-b\tforce backup"
        echo -e "\t-f\tforce update db(s)"
        echo "Example:"
        echo -e "\troot_shell# $0 -tu"
        echo "-------------------------------------------------------------"
        exit 0
}

function print_choice {
        echo
        echo "Please select one:"
        echo "h): to print HELP."
        echo "t): to TEST the script only."
        echo "q): to QUIT."
        echo -n 'Your choice? '
        read action
        case $action in
                h|H) print_usage ;;
                t|T) exec $0 -t ;;
                q|Q) echo; exit 0 ;;
                *) print_choice ;;
        esac
}

echo $@ | grep -q "[^$options-]" || [ $# -eq 0 ] && {
        echo
        echo "${0##*/}: missing argument or invalid options."
        print_choice
}

function get_zone {
        echo
        echo "Which name y