#!/bin/bash
#
# /usr/sbin/runjobsparallel: run all executables in specified directory parallel
#

if [ "$1" = "" ]; then
  echo "usage: $0 <dir>"
  exit 1
fi

cd $1 || exit 1

tmpDir=$(mktemp -d /tmp/runjobsparallel.XXXXXX)

for file in ./*; do
  if [ -f $file ] && [ -x $file ]; then
    i=${#errFiles[@]}
    errFiles[${i}]="${tmpDir}/err.${i}"
    (nice -n 19 $file; echo $? > ${errFiles[${i}]})&
    pids[${i}]=$!
  fi
done

allesDa=false
while ! ${allesDa}
do
  sleep 1
  allesDa=true
  maxErr=0
  for ((i=0; i<${#errFiles[@]}; i++))
  do
    if [ -r ${errFiles[${i}]} ]
    then
      curErr=$(cat "${errFiles[${i}]}")
      [ ${curErr} -gt ${maxErr} ] && maxErr=${curErr}
    elif ps aux | awk '{print $2}' | grep -q "^${pids[${i}]}\$"
    then
      allesDa=false
    else
      echo 255 > "${errFiles[${i}]}"
      maxErr=255
    fi
  done
done

rm -rf ${tmpDir}

exit ${maxErr}

# End of file