#!/bin/bash

LOGFILE="$0.log"  # create a log file based on the executable's name
echo "$(date +'%x %X'): STARTING" >> "${LOGFILE}"  # Log the start of the run
if [ $(grep "COMPLETE" "${LOGFILE}" | wc -l) -lt 1 ]  # check if it has already been run...
then
  echo "Hello World! The time is $(date +'%x %X') and I'm running on host: ${HOSTNAME}. I'm running task $1 :-)"
  sleep 1
  if [ $(( ( RANDOM % 10 )  + 1 )) -gt 4 ]  # will run successfully something like 60% of the time
  then
    echo "SUCCESS!"
    echo "$(date +'%x %X'):COMPLETE" >> "${LOGFILE}"
  else
    echo "Failure"  # Oh boo. This will not be logged
  fi
else
  echo "$(date +'%x %X'): NOT REPEATING" >> "${LOGFILE}"  # Log that run has already been performed
fi