Recipelinuxmaintenancesystemmemory

Clear Linux Page Cache Weekly

Cron job to clear Linux RAM cache every week for maintenance.

This command forces the Linux kernel to drop clean caches (PageCache), dentries, and inodes from memory. While Linux manages RAM efficiently, this manual intervention can be useful on memory-constrained servers to free up RAM for applications.

Cron Schedule

Every Monday0 0 * * 1

Runs every Monday at 00:00 (midnight).

Learn more about Every Monday

Command to Run

Copy and paste this command into your crontab or automation script

sync; echo 1 > /proc/sys/vm/drop_caches

This command will run according to the cron schedule above.

Implementation Examples

Here are code examples for implementing this cron job in different programming languages:

Unix/Linux Crontab0 0 * * 1 /path/to/script.sh

Python (with schedule library)schedule.every().monday.do(job)

Node.js (with node-cron)

cron.schedule('0 0 * * 1', () => {
  console.log('Running every Monday');
});

Go (with robfig/cron)c.AddFunc("0 0 * * 1", func() { fmt.Println("Run every Monday") })

GitHub Actions Workflow- cron: "0 0 * * 1"

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