CombinedOutputTimeout runs the given command with the given timeout and returns the combined output of stdout and stderr.

RunTimeout runs the given command with the given timeout.

StdOutputTimeout runs the given command with the given timeout and returns the output of stdout.

WaitTimeout waits for the given command to finish with a timeout.

KillGrace is the amount of time we allow a process to shutdown before sending a SIGKILL.

Duration just wraps time.Duration.