Re: [cobalt-developers] raq4 memory problem...

[Chris (CJ) Johnson <cj.johnson@xxxxxxx>]

	> physical=`grep Mem: /proc/meminfo  | awk '{print $2}'`
	> used=`grep Mem: /proc/meminfo  | awk '{print $3}'`
	> buffers=`grep Mem: /proc/meminfo  | awk '{print $6}'`
	> cache=`grep Mem: /proc/meminfo  | awk '{print $7}'`
	> swapused=`grep Swap: /proc/meminfo  | awk '{print $3}'`
	> echo $(( $physical - $used + $cache + $buffers - $swapused )) 

    Ack gag phft!  After seeing the above _too_ many times
    in my inbox I am forced to express my disgust.

    How about 

    awk ' /Mem:/ { memfree = $2 - $3 + $6 + $7 } 
	  /Swap:/ { swap = $3 }
	  END { print memfree - swap } ' /proc/meminfo

    Why use one process when 11 can do the trick, I suppose.
    At least someone posted an optimization that cut it to
    10 by eliminating the 'bc'.  Woopie!

    Back when I was raised, (4 MHz cpu, yada yada yada) :-)

    As a general note : awk and perl are actually quite good
    at string manipulation.  Anytime you write code that does
	grep ... | awk
    or 
	grep ... | perl
    you should go get another cup of your favorite caffeinated
    beverage, and try again.

    This rant brought to you by Mr "Too Much Coffee Man".

    cj*