Bash

Why bash script does not work on crontab

but works when run directly.

#!/usr/bin/env bash
aws ec2 stop-instances --instance-ids i-0cebb331ce02934a i-08c55f40aadfa64e i-09aeaec43de5e67e i-09a63f61a682f8d9 i-049cfae6dd25b799
./stop-instances.sh