vi Cached.sh
编写shell脚本
#! /bin/bash
# cache释放:
# To free pagecache:
sync
sync
#echo 1 > /proc/sys/vm/drop_caches
# To free dentries and inodes:
#echo 2 > /proc/sys/vm/drop_caches
# To free pagecache, dentries and inodes:
echo 3 > /proc/sys/vm/drop_caches
然后保存
crontab -e
编写定时任务执行