#!/bin/bash
# $1: max retries
# $2: command to run

total=$1
shift
for ((i = 1; i <= $total; i++)); do
	# run the command
	echo "command: $*"
	bash -c "$*"
	if [ $? == 0 ]; then
		echo "run task successfully"
		exit 0
	fi
	echo "run task failed $i-th time, retry later"
	sleep $((2 * $i))
done

echo "run task failed"
exit 1