shell实现将动态ip修改为静态ip，静态ip修改为其它静态ip

野性酷女 2024-02-18 23:16 15阅读 0赞

shell实现将动态ip修改为静态ip，静态ip修改为其它静态ip  
（1） 将动态ip修改为静态ip的思路  
① 修改ip之前，先备份ifcfg-eth0文件  
② 进入网卡配置目录 /etc/sysconfig/network-scripts/ifcfg-eth0  
③ 修改BOOTPROTO=static  
④ 修改ONBOOT=yes  
⑤ 配置静态ip地址 IPADDR  
⑥ 配置DNS NETMASK  
⑦ 配置网关 GATEWAY  
⑧ 重启网卡验证配置，验证配置结果 service network restart  
（2） 将静态ip修改为其它静态ip的思路  
☆ 先判断是否是静态ip grep "dhcp" /etc/sysconfig/network-scripts/ifcfg-eth0/  
☆  
if\[$? -ne 0\]; then  
sed -i \`s/^IPADDR/\#IPADDR/g\` ifcfg-eth0  
read -p "please Enter ip:"IPADDR  
echo "IPADDR="$IPADDR">>/etc/sysconfig/network-scripts/  
fi  
☆ 重启网卡验证配置结果 service network restart  
代码示例：

\#!/bin/bash  
\#2018年08月14日  
\#change ip shell  
NET\_FILE="/etc/sysconfig/network-scripts"  
NET\_DIR="ifcfg-eth0"  
cd $NET\_FILE/  
\#change ip static for static:  
grep "dhcp" $NET\_DIR  
if \[ $? -ne 0 \];then  
sed -i s/^IPADDR/\#IPADDR/g $NET\_DIR  
read -p "Please enter ip Address,example 192.168.0.11 ip:" IPADDR  
echo "IPADDR=$IPADDR">>$NET\_DIR  
echo "NETMASK=255.255.255.0">>$NET\_DIR  
echo "GATEWAY=192.168.2.254">>$NET\_DIR  
service network restart  
else

\#change ip dhcp for static  
sed -i s/dhcp/static/g $NET\_DIR  
sed -i s/ONBOOT=no/ONBOOT=yes/g $NET\_DIR  
read -p "Please enter ip Address,example 192.168.0.11 ip:" IPADDR  
cat>>$NET\_FILE/$NET\_DIR <<EOF  
IPADDR=$IPADDR  
NETMASK=255.255.255.0  
GATEWAY=192.168.2.1  
EOF  
service network restart  
fi

或者

\#!/bin/bash  
\#by author daqi  
\#change ip shell  
NET\_FILE="/etc/sysconfig/network-scripts"  
NET\_DIR="ifcfg-eth0"  
cd $NET\_FILE/  
\#change ip static for static:  
grep "dhcp" $NET\_DIR  
if \[ $? -ne 0 \];then  
sed -i s/^IPADDR/\#IPADDR/g $NET\_DIR  
\#read -p "Please enter ip Address,example 192.168.0.11 ip:" IPADDR  
echo "IPADDR=$10.30.8.80">>$NET\_DIR  
echo "NETMASK=255.255.255.0">>$NET\_DIR  
echo "GATEWAY=192.168.2.254">>$NET\_DIR  
service network restart  
else  
\#change ip dhcp for static  
sed -i s/dhcp/static/g $NET\_DIR  
sed -i s/ONBOOT=no/ONBOOT=yes/g $NET\_DIR  
read -p "Please enter ip Address,example 192.168.0.11 ip:" IPADDR  
cat>>$NET\_FILE/$NET\_DIR <<EOF  
IPADDR=$IPADDR  
NETMASK=255.255.255.0  
GATEWAY=192.168.2.1  
EOF  
service network restart  
fi

自动配IP脚本

\#!/bin/bash  
\#自动配IP  
\# Author: tianzhaogao （E-mail: 296862380@qq.coom）  
  
line\_num=$(cat /etc/sysconfig/network-scripts/ifcfg-eth0 | wc -l)  
  
while \[ "$line\_num" -gt 7 \]  
do  
sed -i '8c \\' /etc/sysconfig/network-scripts/ifcfg-eth0  
line\_num=$(cat /etc/sysconfig/network-scripts/ifcfg-eth0 | wc -l)  
done  
  
read -t 30 -p "Please input IP:" ipnum  
  
n1=$(echo "$ipnum" | cut -d "." -f 1)  
n2=$(echo "$ipnum" | cut -d "." -f 2)  
n3=$(echo "$ipnum" | cut -d "." -f 3)  
n4=$(echo "$ipnum" | cut -d "." -f 4)  
  
if \[ "$n1" -le 255 -a "$n2" -le 255 -a "$n3" -le 255 -a "$n4" -le 255 \];then  
echo -e IPADDR="$ipnum""\\n"NETMASK=255.255.255.0"\\n"GETWAY="$n1"\\."$n2"\\."$n3"\\.1"\\n"IPV6INIT=no"\\n"USERCTL=no >> /etc/sysconfig/network-scripts/ifcfg-eth0  
sed -i 's/ONBOOT="no"/ONBOOT="yes"/g' /etc/sysconfig/network-scripts/ifcfg-eth0  
sed -i 's/BOOTPROTO=dhcp/BOOTPROTO=none/g' /etc/sysconfig/network-scripts/ifcfg-eth0  
sed -i 's/ONBOOT=no/ONBOOT=yes/g' /etc/sysconfig/network-scripts/ifcfg-eth0  
service network restart  
fi