有时候需要很多网卡，手动配置起来比较麻烦。所以可以写个脚本。
#!/bin/bash
#cd /etc/sysconfig/network-scripts/mkdir ./interface
cd ./interface
a=0
for i in 23 26 29 56 75 80 93 123 165 153 ;
do
a=$(( $a +1 ));
cat <<EOF > ifcfg-eth0:$a
DEVICE=eth0:$a
ONBOOT=yes
NM_CONTROLLED=yes
BOOTPROTO=static
NETMASK=255.255.255.0
GATEWAY=192.168.3.1
EOF
#read -p "input a number about ip:" i
echo "IPADDR=192.168.3.$i" >> ifcfg-eth0:$a
done