One way of launching simultaneous jobs in bash and then waiting for them to complete and also get logs

jobs.sh

#!/usr/bin/env bash

submitted_jobs=""

submit() {
  echo "> ${*}" > /tmp/job_XXX.log
  eval "${*}" >> /tmp/job_XXX.log 2>&1 &
  local id="${!}"
  mv /tmp/job_XXX.log /tmp/job_${id}.log
  if [[ -z "${submitted_jobs}" ]]; then
    submitted_jobs="${id}"
  else
    submitted_jobs="${submitted_jobs} ${id}"
  fi
}
	
await() {
  local FAIL=0
  for job in ${submitted_jobs}; do
    wait ${job}
    if [[ $? != 0 ]]; then
      FAIL=$((${FAIL} + 1))
    fi
    cat /tmp/job_${job}.log
    rm /tmp/job_${job}.log
  done
  submitted_jobs=""
  if [[ ${FAIL} -gt 0 ]]; then
    echo "Error detected, exiting"
    exit 1
  fi
}

submit ssh some-server "echo do something"
submit ssh another-server "echo do something else"

await