Enhancement: Non-root help display, improved process hygiene, and safety checks#36
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Enhancement: Non-root help display, improved process hygiene, and safety checks#36
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December 17, 2025 09:10
- Moved `display_help` to top and added early argument scanning to allow viewing help without requiring `sudo` or triggering dependency checks. - Updated `PATH` export to append to existing system path rather than overwriting it, preserving custom environment paths. - Enhanced `cleanup()` to kill child processes (orphans) upon script exit or interruption. - Added pre-flight check for 500MB free disk space in cache directory to prevent restic crashes. - Removed unreachable `--help` case from main execution block.
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Changes
The script now checks for
-h/--helpimmediately upon execution. This allows to read the documentation without entering a root password or waiting for dependency checks.The
PATHvariable is now appended (:$PATH) instead of overwritten, ensuring custom binaries in the user's environment are still accessible.Added a
cleanuptrap improvement that sendspkillto child processes, ensuring that if the script is cancelled (Ctrl+C), the underlyingresticprocess terminates immediately.Added a pre-flight check to ensure at least 500MB of free space exists in the cache directory/tmp before starting a backup.