Mac OS X sysctl get total and free memory size
You don't.
Well, except for total memory size, which you could have found with sysctl -a | grep mem
(hw.memsize = 4294967296
on my machine).
vm_stat
displays the same information as Activity Monitor.app
does, you just need to multiply the value you want by page size. Both are provided in the output.
top -l 1 | grep PhysMem: | awk '{print $10}'
top -l 1
runs top
in logging mode (e.g. file output, not display/terminal output) for one iteration, then quits. The grep
/awk
filters for the free memory value in top
output.
No grep is needed.
sysctl -n hw.memsize