while :
do
echo "1. 查看CPU

2. 查看內存
3. 查看磁盤
4. 查看IP
5. 退出"

read -p "請選擇菜單： " item
if [ ${item} -eq 1 ]; then
echo "CPU工作頻率如下："
cat /proc/cpuinfo | grep MH
read -p "輸入回車繼續"
fi

if [ ${item} -eq 2 ]; then
echo "可用內存如下： "
free | grep +
read -p "輸入回車繼續"
fi

if [ ${item} -eq 3 ]; then

if [ ${item} -eq 4 ]; then
echo "IP信息如下： "
ifconfig | grep "Bcast"
read -p "輸入回車繼續"

fi
if [ ${item} -eq 5 ]; then
exit 0
fi
done

用shell寫的基本監控菜單