rubocop

[blackrhino]

$ rubocop --help
Usage: rubocop [options] [file1, file2, ...]
    -L, --list-target-files          List all files RuboCop will inspect.
        --except [COP1,COP2,...]     Disable the given cop(s).
        --only [COP1,COP2,...]       Run only the given cop(s).
        --only-guide-cops            Run only cops for rules that link to a
                                     style guide.
    -c, --config FILE                Specify configuration file.
        --auto-gen-config            Generate a configuration file acting as a
                                     TODO list.
        --exclude-limit COUNT        Used together with --auto-gen-config to
                                     set the limit for how many Exclude
                                     properties to generate. Default is 15.
        --force-exclusion            Force excluding files specified in the
                                     configuration `Exclude` even if they are
                                     explicitly passed as arguments.
        --force-default-config       Use default configuration even if configuration
                                     files are present in the directory tree.
        --no-offense-counts          Do not include offense counts in configuration
                                     file generated by --auto-gen-config.
    -f, --format FORMATTER           Choose an output formatter. This option
                                     can be specified multiple times to enable
                                     multiple formatters at the same time.
                                       [p]rogress (default)
                                       [s]imple
                                       [c]lang
                                       [d]isabled cops via inline comments
                                       [fu]ubar
                                       [e]macs
                                       [j]son
                                       [h]tml
                                       [fi]les
                                       [o]ffenses
                                       [w]orst
                                       custom formatter class name
    -o, --out FILE                   Write output to a file instead of STDOUT.
                                     This option applies to the previously
                                     specified --format, or the default format
                                     if no format is specified.
    -r, --require FILE               Require Ruby file.
        --fail-level SEVERITY        Minimum severity (A/R/C/W/E/F) for exit
                                     with error code.
        --show-cops [COP1,COP2,...]  Shows the given cops, or all cops by
                                     default, and their configurations for the
                                     current directory.
    -F, --fail-fast                  Inspect files in order of modification
                                     time and stop after the first file
                                     containing offenses.
    -C, --cache FLAG                 Use result caching (FLAG=true) or don't
                                     (FLAG=false), default determined by
                                     configuration parameter AllCops: UseCache.
    -d, --debug                      Display debug info.
    -D, --display-cop-names          Display cop names in offense messages.
    -E, --extra-details              Display extra details in offense messages.
    -S, --display-style-guide        Display style guide URLs in offense messages.
    -R, --rails                      Run extra Rails cops.
    -l, --lint                       Run only lint cops.
    -a, --auto-correct               Auto-correct offenses.
    -n, --[no-]color                 Force color output on or off.
    -v, --version                    Display version.
    -V, --verbose-version            Display verbose version.
    -s, --stdin                      Pipe source from STDIN.
                                     This is useful for editor integration.