linux man page for free

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] [-c count] [-l] [-o] [-t] [-s delay] [-V]

DESCRIPTION
       free  displays  the  total  amount of free and used physical and swap memory in the system, as well as the buffers used by the kernel.  The
       shared memory column should be ignored; it is obsolete.

   OPTIONS
       -b     Display the amount of memory in bytes.

       -c count
	      Display the result count times.  Requires the -s option.

       -g     Display the amount of memory in gigabytes.

       -k     Display the amount of memory in kilobytes. This is the default.

       -l     Show detailed low and high memory statistics.

       -m     Display the amount of memory in megabytes.

       -o     Display the output in old format, the only difference being this option will disable the display of the "buffer adjusted" line.

       -s     Continuously display the result delay seconds apart. You may actually specify any floating point number for delay, usleep(3) is used
	      for microsecond resolution delay times.

       -t     Display a line showing the column totals.

       -V     Display version information.

FILES
       /proc/meminfo memory information

AUTHORS
       Written by Brian Edmonds.

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

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

Cohesive Systems						    5 Oct 2009								   FREE(1)