For whatever reason you may need to free the disk cache at some point. Since Linux 2.6.16 the interface /proc/sys/vm/drop_caches has been available to simplify this process. First we run the sync command before dropping the cache. Doing this will ensure that all memory in the cache is updated and all dirty pages are synchronized [...]

There are 2 files available on a Linux system which will give a user a wealth of information about a system. These files, /proc/cpuinfo and /proc/meminfo are written by the Linux kernel and tell you important details about your cpu and memory. Both files are read-only and can be viewed with any text editor. This [...]