How Ubuntu cleans up memory regularly

How Ubuntu cleans up memory regularly

1. Enter Su

2. Create cleancache.sh

#!/bin/bash# 每一小时清除一次缓存echo "开始清除缓存"sync;sync;sync #写入硬盘，防止数据丢失sleep 10 #延迟10秒echo 3 > /proc/sys/vm/drop_caches

3. Set the executable

4. Create a timer task to be the administrator's identity

  0 *  *   *   *     cd /home/jiqing/sh && ./cleanCache.sh

Executed once per hour.

This way your computer will not be used more and more.

How do I view cron logs?

This log needs to be opened first.

Into the configuration file,

Remove log comments from Cron

cron.*  /var/log/cron.log #将cron前面的注释符去掉

Restart Rsyslog

sudo  service rsyslog  

View Crontab Logs

tail -f /var/log/cron.log   

Log is a good thing, convenient debugging, easy to see the real situation of the system. Look at the problem through the data.

How Ubuntu cleans up memory regularly