free(1) on Linux
The text 6850cc5d05c7, as Debian 7 (Wheezy) shipped it.
Display amount of free and used memory in the system
Flags it lists
-
--bytes -
--count -
--giga -
--help -
--human -
--kilo -
--lohi -
--mega -
--old -
--seconds -
--si -
--tera -
--total -
--version -
-V -
-b -
-c -
-g -
-h -
-k -
-l -
-m -
-o -
-s -
-t