cereal takes various subcommands:
attachSESSION
Attach to (take control of) cereal session SESSION. This puts the user into a cereal console,
provided by a command-restricted screen session. To detach from an attached session, use "C-\ d".
For help on other available commands, use "C-\ ?". Cereal uses a limited instance of screen to
provide the console. See screen(1) for more info on the available commands. `a' may be used in
place of `attach'.
follow[options]SESSION
Follow (watch, without being able to intervene) a cereal session SESSION. The options are: -c
[--cat] to cat log instead of follow; -p [--path] to output just the path to the log file and
exit. `f' may be used in place of `follow'.
list[SESSION]...
List session(s). With no arguments, will list all sessions. The leading three characters in the
list indicate: whether the session is running (+) or not (-) or in some unknown state (?), whether
the user can attach to the session (a) or not (-), whether the user can follow the session (f) or
not (-). If the session state is unknown (?), it's usually because the user asking for
information about the session can't read the session stat file. `l' may be used in place of
`list'.
help Output a brief usage summary. `h' or `?' may be used in place of `help'.