CONFIG <subcommand> [<arg> [value] [opt] ...]. Subcommands are:
GET <pattern>
    Return parameters matching the glob-like <pattern> and their values.
SET <directive> <value>
    Set the configuration <directive> to <value>.
RESETSTAT
    Reset statistics reported by the INFO command.
REWRITE
    Rewrite the configuration file.
HELP
    Prints this help.
