At top of your bash script add this after `#!/bin/bash` line to aborts the script immediately and add robustness to your script
```
set -euo pipefail
```

Use the following to trap error and show line number where your script failed to debut at run time or development time:
```
_failed() {
echo "$0 - Script failed at line $1"
}

# Trap the ERR
trap '_failed $LINENO' ERR
```

See `man bash` or `help set` for more.