内存释放脚本

#!/bin/bash
set -e
FreeSpace=`free -h|awk '/^Mem/ {print $4}'`

if [ $FreeSpace -lt 600M ];then
        
    echo 1 > /proc/sys/vm/drop_caches
    echo 2 > /proc/sys/vm/drop_caches
    echo 3 > /proc/sys/vm/drop_caches

fi