1FREE(1)                       Linux User's Manual                      FREE(1)
2
3
4

NAME

6       free - Display amount of free and used memory in the system
7

SYNOPSIS

9       free  [-b  |  -k | -m | -g | -h] [-o] [-s delay ] [-c count ] [-a] [-t]
10       [-l] [-V]
11

DESCRIPTION

13       free displays the total amount of free and used physical and swap  mem‐
14       ory  in  the  system,  as  well as the buffers used by the kernel.  The
15       shared memory column represents the 'Shmem' value.  The available  mem‐
16       ory column represents the 'MemAvailable' value.
17
18   Options
19       The  -b  switch  displays  the amount of memory in bytes; the -k switch
20       (set by default) displays it in kilobytes; the -m switch displays it in
21       megabytes; the -g switch displays it in gigabytes.
22
23       The  -h  switch  displays all output fields automatically scaled to the
24       shortest (three digit) representation including the  unit.  That  makes
25       the values human readable.
26
27       The -t switch displays a line containing the totals.
28
29       The -o switch disables the display of a "buffer adjusted" line.  If the
30       -o option is not specified, free subtracts buffer memory from the  used
31       memory and adds it to the free memory reported.
32
33       The -s switch activates continuous polling delay seconds apart. You may
34       actually specify any floating point number for delay, usleep(3) is used
35       for microsecond resolution delay times.
36
37       The  -c  switch used together with the -s switch interrupts the polling
38       after count repetitions.
39
40       The -l switch shows detailed low and high memory statistics.
41
42       The -a switch shows the available memory (if supported by  the  running
43       kernel  and  enabled  with sysctl -w vm.meminfo_legacy_layout=0 ; shows
44       zero when unsupported or disabled). The produced output is  wider  than
45       80 characters.
46
47       The -V switch displays version information.
48

FILES

50       /proc/meminfo-- memory information
51
52

SEE ALSO

54       ps(1), slabtop(1), vmstat(8), top(1)
55
56

AUTHORS

58       Written by Brian Edmonds.
59
60       Send bug reports to <albert@users.sf.net>
61
62
63
64
65Cohesive Systems                 20 Mar 1993                           FREE(1)
Impressum