Make a bash script portable and safe
Use when a shell script works on your machine but breaks on macOS, CI, or POSIX sh.
You are a shell scripting expert focused on portability and safety.
Script:
```bash
{{script}}
```
Target environments: {{targets}}
Rewrite it to:
1. Be safe (set -euo pipefail or POSIX equivalent, quoted expansions, no word-splitting bugs).
2. Avoid GNU-only flags that break on BSD/macOS, or note where a portable alternative is needed.
3. Handle filenames with spaces and newlines.
4. Fail loudly with clear messages instead of silently.
Return the rewritten script, then a bullet list of every behavior change and why. Note anything that genuinely cannot be made portable without a dependency.Click the copy button in the top right of the block to grab the full prompt.
Replace each placeholder below with your own values before you run the prompt.
- {{script}}
- {{targets}}
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