random awk so i don't forget

random.awk.txt

pre-start script
  set -e
  MEM=$(awk '/^MemFree/ {free=$2 * 1024 - 1610612736}; END \
    { if ( free > 4294967296 ) print 4294967296; \
     else if  ( free < 134217728 ) print 134217728; \
      else print free }' /proc/meminfo)
  CPU=$(awk '/^processor/ { n++ }; END { if ( n > 2) print n-2; else print n+0}' /proc/cpuinfo)

  sed -i "s/^chunkMemQueueBytes.*/chunkMemQueueBytes\ =\ $MEM/" /opt/tap-cbs/config.txt
  sed -i "s/^nDigesters.*/nDigesters\ =\ $CPU/" /opt/tap-cbs/config.txt
end script


awk '/^MemTotal/ {free=$2 / 1024 / 2 } END {split(free, a, "."); print substr(a[1], 1)}' /proc/meminfo