Linux in a Nutshell, 6th Edition

Name

free

Synopsis

free [options]

Display statistics about memory usage: total free, used, physical, swap, shared, and buffers used by the kernel.

Options

-b

Calculate memory in bytes.

-k

Default. Calculate memory in kilobytes.

-m

Calculate memory in megabytes.

-o

Do not display “buffer adjusted” line. The -o switch disables the display “-/+ buffers” line that shows buffer memory subtracted from the amount of memory used and added to the amount of free memory.

-s time

Check memory usage every time seconds.

-t

Display all totals on one line at the bottom of output.

-V

Display version information.