free - Display amount of free and used memory in the system
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 represents either the MemShared value (2.4 series
kernels) or the Shmem value (2.6 series kernels and later) taken from the
/proc/meminfo file. The value is zero if none of the entries is exported
by the kernel.
Display the amount of memory in bytes.
Display the amount of memory in kilobytes. This is the default.
Display the amount of memory in megabytes.
Display the amount of memory in gigabytes.
Display the amount of memory in terabytes.
Show all output fields automatically scaled to shortest three digit unit and
display the units of print out. Following units are used.
B = bytes
K = kilos
M = megas
G = gigas
T = teras
If unit is missing, and you have petabyte of RAM or swap, the number is in
terabytes and columns might not be aligned with header.
Display the result
times. Requires the
Show detailed low and high memory statistics.
Display the output in old format, the only difference being this option
will disable the display of the "buffer adjusted" line.
Continuously display the result delay
apart. You may actually specify any floating point number for
is used for microsecond resolution delay times.