free

Question 1

free

Answer 1

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

Question 2

free

• b
• k
• m
• g
• h

Answer 2

• b, –bytes, Display the amount of memory in bytes.
• k, –kibi, Display the amount of memory in kibibytes. (Default)
• m, –mebi, Display the amount of memory in mebibytes.
• g, –gibi, Display the amount of memory in gibibytes.
• h –human, Show all output fields automatically.

B = bytes
K = kibibyte
M = mebibyte
G = gibibyte
T = tebibyte
P = pebibyte

Question 3

free

• c
• s
• t
• l
• si

Answer 3

• c, –count count, Display the result count times. Requires the -s option.
• s, –seconds delay, Continuously display the result delay seconds apart.
• t, –total, Display a line showing the column totals.
• l, –lohi, Show detailed low and high memory statistics.
• si, Use kilo, mega, giga, etc..

Question 4

free

–kilo

–mega

–giga

–tera

–peta

Answer 4

kilobytes

megabytes

gigabytes

terabytes

petabytes.