Replace ExecStart in override

ini

[Service]
ExecStart=
ExecStart=/usr/local/bin/myapp --config /etc/myapp/config.yml

Explanation

When overriding ExecStart, the original must often be cleared first.

Learn the surrounding workflow

Compare similar commands or jump into common fixes when this command is part of a bigger troubleshooting path.

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Edit a unit override file.

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Use an external env file.

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Automatic restart policy.

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