Usage: fgfs [ option ... ] For a complete list of options use --help --verbose General Options Show the most relevant command line options Show all command line options when combined with --help or -h Display the current FlightGear version Specify the root data path Specify the scenery path(s); Defaults to $FG_ROOT/Scenery Specify additional aircraft directory path(s) (alternatively, you can use --aircraft-dir to target a specific aircraft in a given directory) Base directory to use for aircraft and scenery downloads (the TerraSync scenery directory may be specifically set with --terrasync-dir) Select the language for this session Disable splash screen Enable splash screen Reset all user settings to their defaults (rendering options etc) Don't save preferences upon program exit Allow saving preferences at program exit Disable extra mouse pointer Enable extra mouse pointer (i.e. for full screen Voodoo based cards) Exclude random scenery objects Include random scenery objects Exclude random vegetation objects Include random vegetation objects Exclude random buildings objects Include random buildings objects Disable METAR based real weather fetching Enable METAR based real weather fetching (this requires an open internet connection) Pass a METAR string to set up static weather (this implies --disable-real-weather-fetch) (buildings, etc.) Deprecated option (disable internal AI subsystem) Enable AI subsystem (required for multi-player, AI traffic and many other animations) Disable artificial traffic. Enable artificial traffic. Add and enable a new scenario. Multiple options are allowed. Start in a running state Start in a frozen state Fuel is consumed normally Fuel tank quantity forced to remain constant Clock advances normally Do not advance clock Enable auto coordination Disable auto coordination Specify path to your web browser Set property <name> to <value>. <type> can be one of string, double, float, long, int, or bool. Load additional properties from path Use feet for distances Use meters for distances Display console (Windows specific) Print a report in JSON format on the standard output, giving information such as the FlightGear version, $FG_ROOT, $FG_HOME, aircraft and scenery paths, etc. Environment Options Features Disable Heads Up Display (HUD) Enable Heads Up Display (HUD) Disable instrument panel Enable instrument panel Disable anti-aliased HUD Enable anti-aliased HUD Disable 3D HUD Enable 3D HUD Aircraft Select an aircraft profile as defined by a top level <name>-set.xml Print a list of the currently available aircraft types Allows you to define a minimum status level (=development status) for all listed aircraft Select an vehicle profile as defined by a top level <name>-set.xml Select aircraft livery Flight Model Select the core flight dynamics model Can be one of jsb, larcsim, yasim, magic, balloon, ada, external, or null Select aircraft aerodynamics model to load Run the FDM this rate (iterations per second) Run the FDM 'n' times faster than real time Do NOT attempt to trim the model (only with fdm=jsbsim) Trim the model (only with fdm=jsbsim) Start at ground level (default) Start in air (implied when using --altitude) Specify wind coming from DIR (degrees) at SPEED (knots) Set up random wind direction and speed Specify turbulence from 0.0 (calm) to 1.0 (severe) Create an overcast ceiling, optionally with a specific thickness (defaults to 2000 ft). Specify the exact directory to use for the aircraft (normally not required, but may be useful). Interpreted relatively to the current directory. Causes the <path-cache> from autosave_X_Y.xml, as well as --fg-aircraft and the FG_AIRCRAFT environment variable to be bypassed. Aircraft model directory (UIUC FDM ONLY) Initial Position and Orientation Specify starting position relative to an airport Specify parking position at an airport (must also specify an airport) Specify starting position on an AI carrier Specify which starting position on an AI carrier (must also specify a carrier) Specify starting position relative to a VOR Specify the frequency of the VOR. Use with --vor=ID Specify starting position relative to an NDB Specify the frequency of the NDB. Use with --ndb=ID Specify starting position relative to a fix Specify starting runway (must also specify an airport) Specify distance to reference point (statute miles) Specify heading to reference point Starting longitude (west = -) Starting latitude (south = -) Starting altitude Specify heading (yaw) angle (Psi) Specify roll angle (Phi) Specify pitch angle (Theta) Specify velocity along the body X axis Specify velocity along the body Y axis Specify velocity along the body Z axis Specify velocity along a South-North axis Specify velocity along a West-East axis Specify velocity along a vertical axis Specify initial airspeed Specify initial mach number Specify flight path angle (can be positive) Specify initial climb rate (can be negative) Audio Options Disable sound effects Enable sound effects Show a list of available audio device Explicitly specify the audio device to use Rendering Options Enable Rembrandt rendering Disable Rembrandt rendering Specify the bits per pixel Disable fog/haze Enable fastest fog/haze Enable nicest fog/haze Disable celestial body growth illusion near the horizon Enable celestial body growth illusion near the horizon Disable enhanced runway lighting Enable enhanced runway lighting Disable runway light distance attenuation Enable runway light distance attenuation Disable specular reflections on textured objects Enable specular reflections on textured objects Enable 2D (flat) cloud layers Disable 2D (flat) cloud layers Enable 3D (volumetric) cloud layers Disable 3D (volumetric) cloud layers Specify field of view angle Specify a multiplier for the aspect ratio. Disable fullscreen mode Enable fullscreen mode Enable flat shading Enable smooth shading Disable textures Enable textures Specify the materials file used to render the scenery (default: Materials/regions/materials.xml) Anisotropic Texture Filtering: values should be 1 (default),2,4,8 or 16 Disable wireframe drawing mode Enable wireframe drawing mode Specify window geometry (640x480, etc) Specify the default forward view direction as an offset from straight ahead. Allowable values are LEFT, RIGHT, CENTER, or a specific number in degrees Specify initial visibility Specify initial visibility in miles Maximum frame rate in Hz. Hud Options Hud displays number of triangles rendered Hud displays percentage of triangles culled Time Options Specify a time of day Specify the startup season Add this time offset Synchronize time with real-world time Synchronize time with local real-world time Specify a starting date/time with respect to Network Options Enable http server on the specified address. Specify the port or address:port to bind to. Specify which proxy server (and port) to use. The username and password are optional and should be MD5 encoded already. This option is only useful when used in conjunction with the real-weather-fetch option. Enable telnet server on the specified port Enable screen shot http server on the specified port (replaced by --httpd) Disable automatic scenery downloads/updates Enable automatic scenery downloads/updates Set target directory for scenery downloads Enable FGCom built-in Disable FGCom built-in MultiPlayer Options Specify multipilot communication settings assign a unique name to a player Route/Way Point Options Specify a waypoint for the GC autopilot; Read all waypoints from a file IO Options Emit the Garmin AV400 protocol required to drive a Garmin 196/296 series GPS Emit the set of AV400 strings required to drive a Garmin 400-series GPS from FlightGear Open connection using the Atlas protocol Open connection using the ATC sim protocol (atc610x) Open connection using the Garmin GPS protocol Open connection to an Agwagon joystick Open connection to a remote joystick Open connection using the FG Native Controls protocol Open connection using the FG Native FDM protocol Open connection using the FG Native GUI protocol Open connection using the FG Native protocol Open connection using the NMEA protocol Open connection using a predefined communication interface and a preselected communication protocol Open connection using the OpenGC protocol Open connection using the interactive property manager Open connection using the PVE protocol Open connection using the Ray Woodworth motion chair protocol Open connection using the RUL protocol Avionics Options Set the COM1 radio frequency Set the COM2 radio frequency Set the NAV1 radio frequency, optionally preceded by a radial. Set the NAV2 radio frequency, optionally preceded by a radial. Set the ADF1 radio frequency, optionally preceded by a card rotation. Set the ADF2 radio frequency, optionally preceded by a card rotation. Slave the ADF to one of the NAV radios, or set its internal frequency. Situation Options Fail the pitot, static, vacuum, or electrical system (repeat the option for multiple system failures). Debugging Options Abort on encountering a floating point exception; Use a model viewer rather than load the entire simulator; Trace the reads for a property; Trace the writes for a property; Specify which logging level to use Specify which logging class(es) to use