---
name: "fgfsrc"
section: "5"
platform: "linux"
package: "flightgear"
version: "1:2020.3.19+dfsg-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/fgfsrc"
---

# fgfsrc(5)

FlightGear command-line options file

## NAME

fgfsrc - FlightGear command-line options file

## DESCRIPTION

**fgfsrc** is a file containing command-line options read by [**fgfs**(1)](/fgfs/1.md) at startup. This file is meant for those people who do not use a graphical launcher to run the simulator, so that they will be able to specify most preferences that do not change often there (for example, custom scenery/aircraft locations or screen size options), and only those frequently modified (like the starting airport) on the command line.

The file must be in plain-text format and ASCII-encoded. It must contain one or more command-line options listed in [**fgfs**(1)](/fgfs/1.md); each option must be given on a separate line.

If the first non-whitespace character in a line is an octothorpe (**#**), [**fgfs**(1)](/fgfs/1.md) treats the line as a comment and ignores it. Comments should not be added after an option, because that might cause the simulator to fail under some conditions (notably, when the command-line argument given on the line is of the form **--prop=**).

Variables in paths, like **$HOME** or **$FG\_HOME**, are not expanded.

## FILES

- *~/.fgfsrc.hostname*, *~/.fgfsrc*

  Configuration files containing command-line options for [**fgfs**(1)](/fgfs/1.md). The simulator parses command-line arguments first, then *~/.fgfsrc.hostname* (where *hostname* is the hostname of the machine) and then *~/.fgfsrc*, if they exist, in that order.

## EXAMPLE

The following example configuration file synchronizes the simulator clock with the local real-world time, loads real-world weather data, sets the window size to 1024x768 and enables random scenery objects and AI traffic:

```
--time-match-local
--enable-real-weather-fetch
--geometry=1024x768
--enable-random-objects
--enable-ai-traffic
```

## SEE ALSO

[**fgfs**(1)](/fgfs/1.md)