Hi, it's important for a program to detect it has been started by systemd. For example it does not have to fork since it has already been forked.
I've written a test script, which calls env, and there are a few unique environment variables which are an indication it has been started by systemd: SYSTEMD_EXEC_PID and INVOCATION_ID. Is it a good way to test these environment vars (to detect started by systemd) or is there a better way? S. Bon
