Clear Cache from a linux box.
Works only with Kernels 2.6.16 or newer

sync; echo 3 > /proc/sys/vm/drop_caches


Quick Script I use for the machine and cron jobs

Named: clean.sh
#!/bin/bash

###
### Shell script to clean the cache on the machine, it also lists current memory usage, and
### afterwards its cleared so I can compare.
###
### SimonTek April 16th, 2009
###
free -m
sync; echo 3 > /proc/sys/vm/drop_caches
free -m