OS X Tricks: Command line fun…

Amount of Memory

sysctl -a | grep hw.memsize:

or

/usr/sbin/system_profiler SPHardwareDataType | grep Memory

Amount of Swap

ls -al /private/var/vm/swapfile0 | awk '{print $5}'

Amount of Free Swap

vm_stat | awk '/Pages free:/ {print substr($3,1,match($3,/\./)-1)}'