SHELL脚本配置网卡eth0，IP,GW

sea_smart

LZ是菜鸟一个，请教各位大虾！
我想写一个SHELL脚本，实现修改Linux服务器配置IP ，网关，开机启动，静态网址（想着做出交互，让自己输入，但是技术浅薄写了如下）求大虾指点；

BOOTPROTO(存在即设置为static，不存在网网卡里面追加)
ONBOOT（存在设置为yes，不存在往里追加）
IP(替换成自己要修改的地址)
但是我每执行一次就往网卡里重复累计追加一次（为啥不是替换原来的/(ㄒoㄒ)/~~）

#!/bin/bash
grep -i "BOOTPROTO" /etc/sysconfig/network-scripts/ifcfg-eth0
if [$? -eq 0]
then sed -i s'/BOOTPROTO.*/BOOTPROTO=static/'g /etc/sysconfig/network-scripts/ifcfg-eth0
else
  echo "BOOTPROTO=static">> /etc/sysconfig/network-scripts/ifcfg-eth0
fi
grep -i "ONBOOT.*" /etc/sysconfig/network-scripts/ifcfg-eth0
if [$? -eq 0]
then sed -i s'/ONBOOT.*/ONBOOT=yes/'g /etc/sysconfig/network-scripts/ifcfg-eth0
else
  echo "ONBOOT=yes">> /etc/sysconfig/network-scripts/ifcfg-eth0
fi
grep -i "IPADDR.*" /etc/sysconfig/network-scripts/ifcfg-eth0
if [$? -eq 0]
        then sed -i s'/IPADDR.*/IPADDR=101.0.1.1/'g /etc/sysconfig/network-scripts/ifcfg-eth0
else  echo "IPADDR=10.0.1.1">> /etc/sysconfig/network-scripts/ifcfg-eth0
fi
grep -i "NETMASK.*" /etc/sysconfig/network-scripts/ifcfg-eth0
if [$? -eq 0]
        then sed -i s'/NETMASK.*/NETMASK=255.255.255.0/'g /etc/sysconfig/network-scripts/ifcfg-eth0
else
        echo "NETMASK=255.255.255.0">> /etc/sysconfig/network-scripts/ifcfg-eth0
fi
grep -i "gateway.*" /etc/sysconfig/network-scripts/ifcfg-eth0
if [$? eq 0]
        then sed -i s'/GATEWAY.*/GATEWAY=168.192.1.1/'g /etc/sysconfig/network-scripts/ifcfg-eth0
else
        echo "GATEWAY=192.168.1.1">>/etc/sysconfig/network-scripts/ifcfg-eth0
fi
exit

得到的结果是：（求大虾指导一下）

jason680

回复 1# sea_smart

It's hard to know what you want

sea_smart

回复 2# jason680

比如：新安装的Linux系统或者说没有网卡，现在添加网卡eth0,我需要往里面添加这些内容：
ONBOOT=yes
NM_CONTROLLED=yes
BOOTPROTO=static
IPADDR=192.168.1.200
NETMASK=255.255.255.0
GATEWAY=192.168.0.1
DNS1=202.96.134.33
DNS2=202.96.128.89

当然了，可以用vi  eth0进行编辑，但是如果是100台新的server呢？
想实现执行（交互）脚本：
                该网卡eth0 IPADDR已经存在是否修改（新IP替换旧的）
                 该网卡 eth0 IPADDR不存在添加新的IP

可能上面描述的不是很清楚，但是还是感谢大神的回答，O(∩_∩)O谢谢

baby_神

这样交互目测比你vi效率更低

jason680

回复 1# sea_smart

grep -i "BOOTPROTO" /etc/sysconfig/network-scripts/ifcfg-eth0
if [$? -eq 0]
then sed -i s'/BOOTPROTO.*/BOOTPROTO=static/'g /etc/sysconfig/network-scripts/ifcfg-eth0
else
  echo "BOOTPROTO=static">> /etc/sysconfig/network-scripts/ifcfg-eth0
fi

1. grep with -q
2. insert the space

grep -qi "BOOTPROTO" /etc/sysconfig/network-scripts/ifcfg-eth0
if [ $? -eq 0 ]; then
sed -i s'/BOOTPROTO.*/BOOTPROTO=static/'g /etc/sysconfig/network-scripts/ifcfg-eth0
else
  echo "BOOTPROTO=static">> /etc/sysconfig/network-scripts/ifcfg-eth0
fi

青椒521026

我觉得没有必要判断 不管有没有你都可以覆盖原来的内容进行重定向用 ">" 给你一个我常用的脚本
#!/bin/bash
echo "please input eth type [eth0|eth1|eth2|eth3]"
read eth
echo "please input ip"
read ip
echo "please input gateway"
read gw
echo "HWADDR=`ifconfig | awk '/'$eth'/{print $5}'`" > /etc/sysconfig/network-scripts/ifcfg-$eth
echo "TYPE=Ethernet" >> /etc/sysconfig/network-scripts/ifcfg-$eth
echo "BOOTPROTO=none" >> /etc/sysconfig/network-scripts/ifcfg-$eth
echo "IPADDR=$ip" >> /etc/sysconfig/network-scripts/ifcfg-$eth
echo "PREFIX=24" >> /etc/sysconfig/network-scripts/ifcfg-$eth
echo "GATEWAY=$gw" >> /etc/sysconfig/network-scripts/ifcfg-$eth
echo "DEFROUTE=yes" >> /etc/sysconfig/network-scripts/ifcfg-$eth
echo "NAME="$eth"" >> /etc/sysconfig/network-scripts/ifcfg-$eth
echo "ONBOOT=yes" >> /etc/sysconfig/network-scripts/ifcfg-$eth
echo "nameserver 114.114.114.114" >> /etc/resolv.conf
echo "NM_CONTROLLED=no" >> /etc/sysconfig/network-scripts/ifcfg-$eth
service network restart
sleep 7
ifconfigv
不同操作系统不一样 你自己看着改一下就可以了

青椒521026

我觉得没有必要判断 不管有没有你都可以覆盖原来的内容进行重定向用 ">" 给你一个我常用的脚本
#!/bin/bash
echo "please input eth type [eth0|eth1|eth2|eth3]"
read eth
echo "please input ip"
read ip
echo "please input gateway"
read gw
echo "HWADDR=`ifconfig | awk '/'$eth'/{print $5}'`" > /etc/sysconfig/network-scripts/ifcfg-$eth
echo "TYPE=Ethernet" >> /etc/sysconfig/network-scripts/ifcfg-$eth
echo "BOOTPROTO=none" >> /etc/sysconfig/network-scripts/ifcfg-$eth
echo "IPADDR=$ip" >> /etc/sysconfig/network-scripts/ifcfg-$eth
echo "PREFIX=24" >> /etc/sysconfig/network-scripts/ifcfg-$eth
echo "GATEWAY=$gw" >> /etc/sysconfig/network-scripts/ifcfg-$eth
echo "DEFROUTE=yes" >> /etc/sysconfig/network-scripts/ifcfg-$eth
echo "NAME="$eth"" >> /etc/sysconfig/network-scripts/ifcfg-$eth
echo "ONBOOT=yes" >> /etc/sysconfig/network-scripts/ifcfg-$eth
echo "nameserver 114.114.114.114" >> /etc/resolv.conf
echo "NM_CONTROLLED=no" >> /etc/sysconfig/network-scripts/ifcfg-$eth
service network restart
sleep 7
ifconfigv
不同操作系统不一样 你自己看着改一下就可以了

青椒521026

我觉得没有必要判断 不管有没有你都可以覆盖原来的内容进行重定向用 ">" 给你一个我常用的脚本
#!/bin/bash
echo "please input eth type [eth0|eth1|eth2|eth3]"
read eth
echo "please input ip"
read ip
echo "please input gateway"
read gw
echo "HWADDR=`ifconfig | awk '/'$eth'/{print $5}'`" > /etc/sysconfig/network-scripts/ifcfg-$eth
echo "TYPE=Ethernet" >> /etc/sysconfig/network-scripts/ifcfg-$eth
echo "BOOTPROTO=none" >> /etc/sysconfig/network-scripts/ifcfg-$eth
echo "IPADDR=$ip" >> /etc/sysconfig/network-scripts/ifcfg-$eth
echo "PREFIX=24" >> /etc/sysconfig/network-scripts/ifcfg-$eth
echo "GATEWAY=$gw" >> /etc/sysconfig/network-scripts/ifcfg-$eth
echo "DEFROUTE=yes" >> /etc/sysconfig/network-scripts/ifcfg-$eth
echo "NAME="$eth"" >> /etc/sysconfig/network-scripts/ifcfg-$eth
echo "ONBOOT=yes" >> /etc/sysconfig/network-scripts/ifcfg-$eth
echo "nameserver 114.114.114.114" >> /etc/resolv.conf
echo "NM_CONTROLLED=no" >> /etc/sysconfig/network-scripts/ifcfg-$eth
service network restart
sleep 7
ifconfigv
不同操作系统不一样 你自己看着改一下就可以了

sditmaner

收藏了，感谢楼主的无私分享

sea_smart

回复 4# baby_神

感谢回答，但是个人觉得多台server配置时通过脚本还是比vi 有效率点