Shell脚本实现自动修改IP地址
#!/bin/sh#auto Change ip netmask gateway scripts#wugk 2012-12-17cat++++++++自动修改ip和主机名等相关信息+++++++++ETHCONF=/etc/sysconfig/network-scripts/ifcfg-eth0HOSTS=/etc/hostsNETWORK=/et
·
#!/bin/sh
#auto Change ip netmask gateway scripts
#wugk 2012-12-17
cat
<< EOF
++++++++自动修改ip和主机名等相关信息+++++++++
ETHCONF=
/etc/sysconfig/network-scripts/ifcfg-eth0
HOSTS=
/etc/hosts
NETWORK=
/etc/sysconfig/network
DIR=
/data/backup/
`
date
+%Y%m%d`
NETMASK=255.255.255.0
+++++++++-------------------------+++++++++++
EOF
#Define Path 定义变量,可以根据实际情况修改
ETHCONF=
/etc/sysconfig/network-scripts/ifcfg-eth0
HOSTS=
/etc/hosts
NETWORK=
/etc/sysconfig/network
DIR=
/data/backup/
`
date
+%Y%m%d`
NETMASK=255.255.255.0
echo
"================================================"
echo
#定义change_ip函数
function
Change_ip ()
{
#判断备份目录是否存在,中括号前后都有空格,!叹号在shell表示相反的意思#
if
[ ! -d $DIR ];
then
mkdir
-p $DIR
fi
echo
"Now Change ip address ,Doing Backup Interface eth0"
cp
$ETHCONF $DIR
grep
"dhcp"
$ETHCONF
#如下$?用来判断上一次操作的状态,为0,表示上一次操作状态正确或者成功#
if
[ $? -
eq
0 ];
then
#read -p 交互输入变量IPADDR,注冒号后有空格,sed -i 修改配置文件#
read
-p
"Please insert ip Address:"
IPADDR
sed
-i
's/dhcp/static/g'
$ETHCONF
#awk -F. 意思是以.号为分隔域,打印前三列#
echo
-e
"IPADDR=$IPADDR\nNETMASK=$NETMASK\nGATEWAY=`echo $IPADDR|awk -F. '{print $1"
.
"$2"
.
"$3}'`.254"
>>$ETHCONF
echo
"This IP address Change success !"
else
echo
-n
"This $ETHCONF is static exist ,please ensure Change Yes or NO"
:
read
i
fi
if
[
"$i"
==
"y"
-o
"$i"
==
"yes"
];
then
read
-p
"Please insert ip Address:"
IPADDR
count=(`
echo
$IPADDR|
awk
-F.
'{print $1,$2,$3,$4}'
`)
#定义数组, ${#count[@]}代表获取变量值总个数#
A=${
#count[@]}
#while条件语句判断,个数是否正确,不正确循环提示输入,也可以用[0-9]来判断ip#
while
[
"$A"
-
ne
"4"
]
do
read
-p
"Please re Inster ip Address,example 192.168.0.11 ip"
: IPADDR
count=(`
echo
$IPADDR|
awk
-F.
'{print $1,$2,$3,$4}'
`)
A=${
#count[@]}
done
#sed -e 可以连续修改多个参数#
sed
-i -e
's/^IPADDR/#IPADDR/g'
-e
's/^NETMASK/#NETMASK/g'
-e
's/^GATEWAY/#GATEWAY/g'
$ETHCONF
#echo -e \n为连续追加内容,并自动换行#
echo
-e
"IPADDR=$IPADDR\nNETMASK=$NETMASK\nGATEWAY=`echo $IPADDR|awk -F. '{print $1"
.
"$2"
.
"$3}'`.254"
>>$ETHCONF
echo
"This IP address Change success !"
else
echo
"This $ETHCONF static exist,please exit"
exit
$?
fi
}
#定义hosts函数
############function hosts##############
function
Change_hosts ()
{
if
[ ! -d $DIR ];
then
mkdir
-p $DIR
fi
cp
$HOSTS $DIR
read
-p
"Please insert ip address"
: IPADDR
host=`
echo
$IPADDR|
sed
's/\./-/g'
`
cat
$HOSTS |
grep
127.0.0.1 |
grep
"$host"
if
[ $? -
ne
0 ];
then
sed
-i
"s/127.0.0.1/127.0.0.1 $host/g"
$HOSTS
echo
"This hosts change success "
else
echo
"This $host IS Exist .........."
fi
}
###########fuction network###############
#定义network函数
function
Change_network ()
{
if
[ ! -d $DIR ];
then
mkdir
-p $DIR
fi
cp
$NETWORK $DIR
read
-p
"Please insert ip address"
: IPADDR
host=`
echo
$IPADDR|
sed
's/\./-/g'
`
grep
"$host"
$NETWORK
if
[ $? -
ne
0 ];
then
sed
-i
"s/^HOSTNAME/#HOSTNAME/g"
$NETWORK
echo
"NETWORK=$host"
>>$NETWORK
else
echo
"This $host IS Exist .........."
fi
}
#PS3一般为菜单提示信息#
PS3=
"Please Select ip or hosts Menu"
:
#select为菜单选择命令,格式为select $var in ..command.. do .... done
select
i
in
"Change_ip"
"Change_hosts"
"Change_network"
do
#case 方式,一般用于多种条件下的判断
case
$i
in
Change_ip )
Change_ip
;;
Change_hosts )
Change_hosts
;;
Change_network )
Change_network
;;
*)
echo
echo
"Please Insert $0: Change_ip(1)|Change_hosts(2)|Change_network(3)"
echo
;;
esac
done
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