FREE(1)			      Linux User's Manual		       FREE(1)



NAME
       free - Display amount of free and used memory in the system

SYNOPSIS
       free  [-b  |  -k | -m | -g | -h] [-o] [-s delay ] [-c count ] [-a] [-t]
       [-l] [-V]

DESCRIPTION
       free displays the total amount of free and used physical and swap  mem-
       ory  in	the  system,  as  well as the buffers used by the kernel.  The
       shared memory column represents the 'Shmem' value.  The available  mem-
       ory column represents the 'MemAvailable' value.

   Options
       The  -b	switch	displays  the amount of memory in bytes; the -k switch
       (set by default) displays it in kilobytes; the -m switch displays it in
       megabytes; the -g switch displays it in gigabytes.

       The  -h	switch	displays all output fields automatically scaled to the
       shortest (three digit) representation including the  unit.  That	 makes
       the values human readable.

       The -t switch displays a line containing the totals.

       The -o switch disables the display of a "buffer adjusted" line.	If the
       -o option is not specified, free subtracts buffer memory from the  used
       memory and adds it to the free memory reported.

       The -s switch activates continuous polling delay seconds apart. You may
       actually specify any floating point number for delay, usleep(3) is used
       for microsecond resolution delay times.

       The  -c	switch used together with the -s switch interrupts the polling
       after count repetitions.

       The -l switch shows detailed low and high memory statistics.

       The -a switch shows the available memory (if supported by  the  running
       kernel  and  enabled  with sysctl -w vm.meminfo_legacy_layout=0 ; shows
       zero when unsupported or disabled). The produced output is  wider  than
       80 characters.

       The -V switch displays version information.

FILES
       /proc/meminfo-- memory information


SEE ALSO
       ps(1), slabtop(1), vmstat(8), top(1)


AUTHORS
       Written by Brian Edmonds.

       Send bug reports to <albert@users.sf.net>




Cohesive Systems		 20 Mar 1993			       FREE(1)