/proc/uptime in Mac OS X

Question

I need the EXACT same output as Linux\'s \"cat /proc/uptime\".

For example, with /proc/uptime, you\'d get

1884371.64 38646169.12

Answer 1

Got it...

$sysctl -n kern.boottime | cut -c14-18
87988

Then I just converted that to readable format (don't remember how):

1 Days 00:26:28