How to release the Shell script of CentOS system memory

This article introduces the relevant knowledge of "how to release the Shell script in CentOS system memory". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

Content of the script:

The code is as follows:

#! / bin/bash

# cache release:

# 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

Use the system crontab to run automatically every day:

The code is as follows:

Crontab-e

Enter the following:

The code is as follows:

00 00 * / root/Cached.sh

Free memory at 0 o'clock every day, at which time you can modify the settings according to your needs.

When running. / Cached.sh, if you prompt an error: Permission denied permission problem, you can run:

The code is as follows:

Chmod + x .Cached.sh

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