---
name: "filius"
section: "1"
platform: "linux"
package: "filius"
version: "2.8.0+ds-2"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/filius"
---

# filius(1)

educational network simulator

## NAME

filius - educational network simulator

## SYNOPSIS

**filius** \[*options*\] \[*project.fls*\]

## DESCRIPTION

This manual page documents briefly the **filius** program.

**filius** is an educational program to simulate networking technologies like Ethernet, TCP/IP as well as various services and applications.

It offers network components like desktops, servers, switches and routers.  After assembling a network, the setup can be simulated and saved as a *project.fls* (zip archive) file.

## OPTIONS

The program offers the following options:

- **-h, --help**

  Show a summary of options.

- **-l**

  Activate logging to the log file.

- **-n**

  Activate the native look and feel graphical user interface.

- **-r \<arg\>**

  Multiplication factor to adapt the round-trip-time of the simulated network: 1 (default) up to 5.

- **-s**

  Adapt UI for small screen resolutions (less than 1024x768).

- **-v**

  Activate verbose logging.

- **-w, --wd \<arg\>**

  Working directory of the program.  Defaults to *~/.filius/*.\

## AUTHOR

This manual page was written by Andreas B. Mundt \<andi@debian.org\> for the Debian system (but may be used by others).