How to Investigate Linux Applications That Return Permission Denied Only Under Systemd

A systemd service runs with a defined user, working directory, environment, and sandbox that differs from an interactive shell.

Checks to make

Inspect the unit’s user, group, working directory, and sandbox settings, then review audit and journal errors for the exact path. Test with the service identity and grant only required access, preserving sandbox protections where possible.

When to get help

Linux administration can trace service context and filesystem permissions. Informatix Systems can assess the symptoms, evidence, and next steps. Contact Informatix Systems to discuss this issue.