shell脚本自动修改linux下ifcfg-ethx文件
说明：此脚本作用
1)当发现网卡为dhcp模式时，修改为static模式，并添加IP等信息；
2)修改网卡IP为指定的IP
#!/bin/bash
FILE_PATH1=/etc/sysconfig/network-scripts/ifcfg-eth0
FILE_PATH2=/etc/sysconfig/network-scripts/ifcfg-eth1
#the last ipaddr netmask gateway for ifcfg-eth0
IP_MODI1=192.168.X.X
MASK_MODI1=255.255.255.0
GATEWAY_MODI1=""
#the last ipaddr netmask gateway for ifcfg-eth1
IP_MODI2=192.168.Y.Y
MASK_MODI2=255.255.255.0
GATEWAY_MODI2=""
change_dhcp()
{
#edit eth0
sed -i 's/dhcp/static/g' $FILE_PATH1 #change 'dhcp' to 'static'
echo IPADDR=$IP_MODI1>> $FILE_PATH1
echo NETMASK=$MASK_MODI1>> $FILE_PATH1
echo GATEWAY=$GATEWAY_MODI1>> $FILE_PATH1
#edit eth1
sed -i 's/dhcp/static/g' $FILE_PATH2 #change 'dhcp' to 'static'
echo IPADDR=$IP_MODI2>> $FILE_PATH2
echo NETMASK=$MASK_MODI2>> $FILE_PATH2
echo GATEWAY=$GATEWAY_MODI2>> $FILE_PATH2
}
change_static()
{
#get primal ip from eth0
IP_PRIMAL1=`grep -i ipaddr $FILE_PATH1|awk -F "=" '{printf $2 }'`
#get primal netmask from eth0
MASK_PRIMAL1=`grep -i netmask $FILE_PATH1|awk -F "=" '{printf $2}'`
#get primal gateway from eth0
GATEWAY_PRIMAL1=`grep -i gateway $FILE_PATH1|awk -F "=" '{printf $2}'`
#get primal ip from eth1
IP_PRIMAL2=`grep -i ipaddr $FILE_PATH2|awk -F "=" '{printf $2 }'`
#get primal netmask from eth1
MASK_PRIMAL2=`grep -i netmask $FILE_PATH2|awk -F "=" '{printf $2}'`
#get primal gateway from eth1
GATEWAY_PRIMAL2=`grep -i gateway $FILE_PATH2|awk -F "=" '{printf $2}'`
#update ipaddr netmask and save ifcfg-eth0.bak file
# sed -e "s/$IP_PRIMAL1/$IP_MODI1/g" -e "s/$MASK_PRIMAL1/$MASK_MODI1/g" -e "s/$GATEWAY_PRIMAL1/$GATEWAY_MODI1/g" $FILE_PATH1>ifcfg-eth0.bak
sed -i -e "s/$IP_PRIMAL1/$IP_MODI1/g" $FILE_PATH1
sed -i -e "s/$MASK_PRIMAL1/$MASK_MODI1/g" $FILE_PATH1
sed -i -e "s/$GATEWAY_PRIMAL1/$GATEWAY_MODI1/g" $FILE_PATH1
sed -i -e "s/$IP_PRIMAL2/$IP_MODI2/g" $FILE_PATH2
sed -i -e "s/$MASK_PRIMAL2/$MASK_MODI2/g" $FILE_PATH2
sed -i -e "s/$GATEWAY_PRIMAL2/$GATEWAY_MODI2/g" $FILE_PATH2
#update ipaddr netmaskand save ifcfg-eth1.bak file
# sed -e "s/$IP_PRIMAL2/$IP_MODI2/g" -e "s/$MASK_PRIMAL2/$MASK_MODI2/g" -e "s/$GATEWAY_PRIMAL2/$GATEWAY_MODI2/g" $FILE_PATH2>ifcfg-eth1.bak
#update ifcfg-eth0 and ifcfg-eth1 file
# \cp ifcfg-eth0.bak $FILE_PATH1
# \cp ifcfg-eth1.bak $FILE_PATH2
}
change_run()
{
service network restart
#show network card information
cat $FILE_PATH1
cat $FILE_PATH2
}
#get bootproto
boot_model1=`grep -i bootproto $FILE_PATH1|awk -F "=" '{printf $2 }'`
boot_model2=`grep -i bootproto $FILE_PATH2|awk -F "=" '{printf $2 }'`
if [[ $boot_model1 = "dhcp" ]] && [[ $boot_model2 = "dhcp" ]];then
change_dhcp
change_run
elif [[ $boot_model1 = "static" ]] && [[ $boot_model2 = "static" ]];then
change_static
change_run
else
echo "please check the bootproto!"
fi
