Retry control

-a --attempts

The number of times the child command is retried.

-U --unlimited-attempts

Continue retrying until the command is successful, without limiting the number of retries.

--retry-always

Always retry, unless a stop predicate is triggered.

--forever

This will continue retrying the command forever, regardless of whether it succeeds or fails. This is useful for long-running services you wish to restart if they crash.