今天写了个脚本及交互式部署DNS的

本来想截图来着的，----太大了。截图不全，就复制粘贴吧，----各位多多指教

#!/bin/bash

# written by booduklee

#2011-05-05

# this program is to create dns_config_file

echo "-------------welcome to the cr_dns script--------- "

PATH=/usr/kerberos/sbin:/usr/kerberos/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

export PATH

# whether user is root

if echo $USER | grep '\' >> /dev/null;

then

echo "permmision passed"

else

exit 3

fi

# whether the scripts is running

if [ -f key_lock ];

then

echo "it has runned by others; please wait"

else

echo $$ > key_lock

fi

# whether the bind has installed

if grep '^named' /etc/passwd;

then

echo "you have installed the bind_dns"

else

echo " please install the bind ,then run the scripts"

fi

# ------------create named.conf-----------

config=/var/named/chroot/etc/named.conf

data=/var/named/chroot/var/named

export config

export data

# whether named.conf exists

if [ -f $config ];

then

echo "named.conf exists"

else

cp /usr/share/doc/bind-*/sample/etc/named.conf $config

sed '24,$d' $config

fi

# write zone

function cr_zone {

read -p "please input your zone_name:" zone;

cat >> $config << EOF

zone "$zone"  { type master; file "$zone.zone"; };

EOF

}

#######----------------     create ns_record ------

function name_zone {

touch $data/$zone.zone;

chown  named:named $data/$zone.zone;

read -p "please enter your ns:" ns;

if echo $ns | grep '.*\.$';

then echo " this ns is legal,please go on"

else

echo "this ns is invalid"

fi

read -p "please enter your admin_mail_address:" mail;

cat >> $data/$zone.zone << EOF

\$TTL  86400

@      IN     SOA     localhost.  $mail   (

                                            42   ; serial

                                            3H   ; refresh

                                            15M  ; retry

                                            1W   ; expiry

                                            1D ) ; minimum

      IN   NS   $ns

EOF

}

#------------------add A_record-----------------

function a_cord_zone {

i=1;

while [ $i -lt 2 ] ;

do

read -p "whether you want to create a_record (y|n):" a_ch;

case $a_ch in

y)

 read -p "please input your a_name:" a;

 read -p "please input your ip_address:" ip;

if echo $ip | egrep -x '([1-9]|([1-9][0-9])|(1[0-9][0-9])|(2[0-4][0-9])|25[0-5])\.([1-9]|([1-9][0-9])|(1[0-9][0-9])|(2[0-4][0-9])|25[0-5])\.([1-9]|([1-9][0-9])|(1[0-9][0-9])|(2[0-4][0-9])|25[0-5])\.([1-9]|([1-9][0-9])|(1[0-9][0-9])|(2[0-4][0-9])|25[0-5])' ;   #  to decide whether the ip_address is valid

then

echo "this ip_address is legal" >> /dev/null

else

echo "this ip_address id invalid"

exit 6;

fi

cat >> $data/$zone.zone << EOF

$a    IN  A   $ip

EOF

;;

n)

    i=$[ i+1 ];

    ;;

*)

   echo "INPUT ERROR, you can just enter (y|n)";

    exit 0;

   ;;

esac

done

}

while true;

do

read -p "do you want to create a new zone:(y|n)" choice

case $choice in

y)

 while true;

do

read -p "whther go on(y|n):" tuichu

case $tuichu in

y)

cr_zone;

name_zone;

a_cord_zone;

 ;;

*)

rm -rf key_lock;

exit 9;

;;

esac

done

;;

n)

   echo " will be quit"

    rm -rf key_lock

    exit 4

   ;;

*)

    echo "INPUT ERROR , you can just enter y|n "

    exit 0

    ;;

esac

done

rm -rf key_lock  #  delete the pid_lock

#-----------------it's over----------------------------------------------