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So, in systemd we have a mechanism to pass environment variables to the process using PassEnvironment.

Is it possible to specify default values for these variables in the systemd service file itself?

I have tried out PassEnvironment='POLL_INTERVAL=10' but it is not working.

Could you provide an example?

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Use the Environment= parameter instead. PassEnvironment= is used to pass variables whose values are defined within the systemd process itself (PID 1).

Example:

Environment=“VAR=string”
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  • what if the variable is an environmental variable? Dec 10, 2022 at 11:37

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