gcalcli --help

usage: gcalcli [-h] [--auth_host_name AUTH_HOST_NAME]
               [--noauth_local_webserver]
               [--auth_host_port [AUTH_HOST_PORT ...]]
               [--logging_level {DEBUG,INFO,WARNING,ERROR,CRITICAL}]
               [--version] [--client-id CLIENT_ID]
               [--client-secret CLIENT_SECRET] [--config-folder CONFIG_FOLDER]
               [--noincluderc] [--calendar CALENDAR]
               [--default-calendar DEFAULTCALENDAR] [--locale LOCALE]
               [--refresh] [--nocache] [--conky] [--nocolor]
               [--lineart {fancy,unicode,ascii}]
               {list,search,edit,delete,agenda,updates,conflicts,calw,calm,quick,add,import,remind}
               ...

Google Calendar Command Line Interface

positional arguments:
  {list,search,edit,delete,agenda,updates,conflicts,calw,calm,quick,add,import,remind}
                        Invoking a subcommand with --help prints subcommand
                        usage.
    list                list available calendars
    search              search for events within an optional time period
    edit                edit calendar events
    delete              delete events from the calendar
    agenda              get an agenda for a time period
    updates             get updates since a datetime for a time period
                        (defaults to through end of current month)
    conflicts           find event conflicts
    calw                get a week-based agenda in calendar format
    calm                get a month agenda in calendar format
    quick               quick-add an event to a calendar
    add                 add a detailed event to the calendar
    import              import an ics/vcal file to a calendar
    remind              execute command if event occurs within <mins> time

options:
  -h, --help            show this help message and exit
  --auth_host_name AUTH_HOST_NAME
                        Hostname when running a local web server. (default:
                        localhost)
  --noauth_local_webserver
                        Do not run a local web server. (default: False)
  --auth_host_port [AUTH_HOST_PORT ...]
                        Port web server should listen on. (default: [8080,
                        8090])
  --logging_level {DEBUG,INFO,WARNING,ERROR,CRITICAL}
                        Set the logging level of detail. (default: ERROR)
  --version             show program's version number and exit
  --client-id CLIENT_ID
                        API client_id (default:
                        232867676714.apps.googleusercontent.com)
  --client-secret CLIENT_SECRET
                        API client_secret (default: 3tZSxItw6_VnZMezQwC8lUqy)
  --config-folder CONFIG_FOLDER
                        Optional directory to load/store all configuration
                        information (default: None)
  --noincluderc         Whether to include ~/.gcalclirc when using
                        configFolder (default: True)
  --calendar CALENDAR   Which calendars to use (default: [])
  --default-calendar DEFAULTCALENDAR
                        Optional default calendar to use if no --calendar
                        options are given (default: [])
  --locale LOCALE       System locale (default: )
  --refresh             Delete and refresh cached data (default: False)
  --nocache             Execute command without using cache (default: True)
  --conky               Use Conky color codes (default: False)
  --nocolor             Enable/Disable all color output (default: True)
  --lineart {fancy,unicode,ascii}
                        Choose line art style for calendars: "fancy": for
                        VTcodes, "unicode" for Unicode box drawing characters,
                        "ascii" for old-school plusses, hyphens and pipes.
                        (default: fancy)

gcalcli, gcalcli --help