free – Display amount of free and used memory in the system

Synopsis

free [-b | -m | -k ] [-o] [-s delay ] [-t] [-V]

Description

free displays the total amount of free & used physical and swap memory in the system, and buffers used by the kernel.

Options

-b switch displays the amount of memory in bytes;

-k switch (set by default) displays it in kilobytes;

-m switch displays it in megabytes.

-t switch displays a line containing the totals.

-o switch disables the display of a “buffer adjusted” line. If the -o option is missing, free subtracts buffer memory from the used memory and adds it to the free memory reporte.

-s switch activates continuous polling delay seconds apart. You may actually specify any floating point numbers for delay.

-V displays version information.