usage: %MAIN% [options] [command ...]

Options:

  -h,--help           Print this message and exit.
  -v,--version        Print version and exit.
  -C,--control <CTL>  Control endpoint for process runner (default `%ADDR%`).

Commands:

  status                     Report status of cluster workers, the default.
  set-size <N>               Set cluster size to N workers.
  stop                       Stop, shutdown all workers and stop controller.
  restart                    Restart, restart all workers.
  ls [DEPTH]                 List application dependencies.
  objects-start <ID>         Start tracking objects on ID.
  objects-stop <ID>          Stop tracking objects on ID.
      Object metrics are published, see the `--metrics` option to `sl-run`.

  cpu-start <ID> [TIMEOUT]   Start CPU profiling on ID.
      TIMEOUT is the optional watchdog timeout, in milliseconds.  In watchdog
      mode, the profiler is suspended until an event loop stall is detected;
      i.e. when a script is running for too long.  Only supported on Linux.

  cpu-stop <ID> [NAME]       Stop CPU profiling on ID, save as "NAME.cpuprofile".
      CPU profiles must be loaded into Chrome Dev Tools. The NAME is optional,
      profiles default to being named `node.<PID>.cpuprofile`.

  heap-snapshot <ID> [NAME]  Snapshot heap objects for ID, save as
                             "NAME.heapsnapshot".
      Heap snapshots must be loaded into Chrome Dev Tools. The NAME is
      optional, snapshots default to being named `node.<PID>.heapshapshot`.

  patch <ID> <FILE>          Apply patch FILE to ID.

  env-get [ID]               Get the complete environment of the specified
                             process. If no target is specified the default is 0,
                             the cluster master process.

  env-set <K1=V1...>         Set environment variables in master and worker.
                             Changes are live without process restart.

  env-unset <KEYS...>        Unset environment variables in master and workers.
                             Changes are live without process restart.

  dbg-start <ID>             Enable DevTools Debugger backend in the target
                             worker.

  dbg-stop <ID>              Disable DevTools Debugger backend in the target
                             worker.

  dbg-status <ID>            Get the status of DevTools Debugger in the target
                             worker.

Commands specific to a worker ID accept either a process ID or cluster worker
ID, and use an ID of `0` to mean the cluster master.