liunx定时清理运行内存脚本

定时任务

*/10 * * * * /bin/sh /usr/local/shell/cleancaches.sh

shell脚本

#!/bin/bash
mem_size=`free -m | awk '/Mem/{print $4}'`
path_log="/usr/local/src/timer_data.log"
dat=$(date '+%Y-%m-%d %H:%M:%S')
echo "$dat mem size:$mem_size" >> $path_log
echo 1 > /proc/sys/vm/drop_caches
last_mem_size=`free -m | awk '/Mem/{print $4}'`
echo "$dat last mem size:$last_mem_size" >> $path_log