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# Clear cache memory on Linux Systems
- URL: https://www.bagz.fr/clear-cache-memory-on-linux-systems/
- Published: 2015-08-21T12:47:19.000Z
- Updated: 2015-08-21T12:47:19.000Z
- Author: bgazui
- Tags: Linux, #Migrated-1790668826633, #wp, #wp-post, #Import 2026-09-29 08:00

Sometimes, you can see that memory is not correctly released once used and some caching can remain.

You can see that by using the ***free*** command:

\# free -m  
 total used free shared buffers cached  
Mem: 64458 53397 11060 0 1550 49163  
\-/+ buffers/cache: 2683 61774  
Swap: 9998 35 9963  

At this time, you can so free this cache and release memory by using this command:

\# sync; echo 3 > /proc/sys/vm/drop\_caches

Now, you can check again:

\# free -m  
 total used free shared buffers cached  
Mem: 64458 1162 63295 0 1 32  
\-/+ buffers/cache: 1128 63329  
Swap: 9998 35 9963  

The memory has correctly been released and the cache is almost empty!