Table of Contents
cached stand for in
free output? discussion
- Your total (physical) RAM;
- memory in use by the OS.
memory not in use.
This shows memory usage for specific purposes, these values are included in the value for used.
The second line gives first line values adjusted. It gives the original value for
used minus the sum
cached and the original value for free plus the sum buffers+cached, hence its title.
Linux always tries to use RAM to speed up disk operations by using available memory for buffers (file system metadata) and cache (pages with actual contents of files or block devices). If space is needed by applications, then Linux will free up the
cacheto yield memory for the applications.