#!/bin/bash

: ${_cmd:="echo"}
: ${PMAX:=`ls -1d /sys/devices/system/cpu/cpu* | wc -l`}

dispatchWork() {
  while read -r -u 0 LINE
  do
    while [ $(jobs -rp | wc -l) -ge $PMAX ]
    do
        sleep 1
    done
    eval $_cmd "$LINE" &
  done
  wait
}