parallelize commands

parallelize.sh

#!/bin/bash

# adapted from http://stackoverflow.com/questions/10909685/run-parallel-multiple-commands-at-once-in-the-same-terminal
# but this version works in Ubuntu + Windows Subsystem for Linux

PID_LIST=""

for cmd in "$@"; do {
  echo "Process \"$cmd\" started";
  eval $cmd & pid=$!
  PID_LIST="$PID_LIST $pid";
} done

trap "kill $PID_LIST" INT

echo "Parallel processes have started";

wait $PID_LIST

echo
echo "All processes have completed";