Re: BUG: swap_activity broken in v20120322

[Thomas Sattler]

Hi Ole,

you did not (yet) comment the BUG, so I've had a closer look
at the reported issue:

 vmstat 1 2 2>/dev/null | tail -n1 | awk '{print $7*$8}' ||
   vm_stat 1 | head -n 3 | tail -n1 | awk '{print $9*$10}'

The idea seems to be "run 'vmstat' and run 'vm_stat' in case
'vmstat' failed". But in fact it is only *one* commandline
where 'vm_stat' is run in case *awk* failed.

The following commands demonstrate this:

 $ false | tail | true || date  # <-- date is not run
 $ true | tail | false || date  # <-- date is run
     \              \
      \__ vmstat     \__ awk

If somebody would reply with the output of 'vm_stat', I'd
offer a patch to fix the issue. (I don't have a MAC.)

Thomas