[ShellScript] 常用功能

• 取得 MAC/IP/MASK/Gateway/
  
  MACADDR=`LANG=C ifconfig $iface | awk '/HWaddr/{ print $5 }' `
  ADDRESS=`LANG=C ifconfig $iface | awk '/inet addr:/{ print $2 }' | awk -F: '{print $2 }'`
  NETMASK=`LANG=C ifconfig $iface | awk -F: '/Mask/{print $4}'`
  GATEWAY=`LANG=C route -n | grep UG | awk '{print $2}'`
  
  
• 複寫config某欄位
  
  sed -i 's/^address=*.*/address='${ADDRESS}'/g' /etc/conf