Output all scripts output as valid json lines / Bash function to output stdout lines as json formatted lines / Useful for logging in AWS ECS to CloudWatch logs

script.sh

#!/usr/bin/env bash
set -eo pipefail

function message() {
    python -c '
import sys
import os
import json
import datetime

for line in sys.stdin:
  json.dump({
      "date": datetime.datetime.now().isoformat(),
      "msg": line,
      "name": "logger",
  }, sys.stdout)
  sys.stdout.write("\n")
  sys.stdout.flush()
'
}


ls -al | messsage