linux awk与shell 参数互传

http://blog.csdn.net/flyqwang/article/details/6947742





 "####################################memorycheck#######################################"

memory=`free -m | grep Mem`
read total used buffers cached<<< `echo "$memory" |awk '{print $2,$3,$6,$7}'` 

echo "$total $used $buffers $cached"

let "usedtrue=used-buffers-cached" percent=`echo "$usedtrue*100/$total"|bc`"%" echo "## MEMORY Used Percent: $percent"