bouncingcow(6)

📦
version 6.15 · 2 versions
, in alpine 3.24, arch rolling, nixpkgs unstable

🐄 bouncingcow(6) — XScreenSaver’s happy trampoline cow ✨

🐄 NAME 🐄

bouncingcow — a happy cow on a trampoline in 3D. Moo. 🐄💖

✨ SYNOPSIS ✨

Run it like this, bestie:

bouncingcow [--display host:display.screen] [--visual visual] [--window]
            [--root] [--window-id number] [--delay number] [--speed number]
            [--count number] [--mathematical] [--texture filename] [--wireframe]
            [--fps]

💅 DESCRIPTION 💅

It’s very silly. That’s genuinely the whole mood. 😭🐄✨

🎀 OPTIONS 🎀

Here’s the full flag menu — every single one, no skips 🫶

  • --visual visual — Pick which visual to use. Legal values are either the name of a visual class, or the id number — decimal or hex — of one specific visual. 👀
  • --window — Draw on a brand-new window. This is the default, bestie. ✨
  • --root — Draw on the root window. Yes, that root. 🌈
  • --window-id number — Draw on the window you specify with number.
  • --delay number — Per-frame delay, in microseconds. Default: 30000 (0.03 seconds.).
  • --speed number — How fast the cow bounces. Larger number = faster bounce. Default: 1.0.
  • --count number — How many cows! Default 1. Cue the herd 🐄🐄🐄
  • --texture filename — An image file to paint on the cow’s hide. 🎨
Note that on most systems, GL textures must have dimensions that are a power of two. Important texture lore, no cap. 🧚
  • --mathematical — Periodically transition to display mathematically ideal cows (spherical, frictionless). The math girlies ate. 📐
  • --wireframe — Render in wireframe instead of solid. 💀
  • --fps — Display the current frame rate, CPU load, and polygon count. Stats o’clock 🔥

🌸 ENVIRONMENT 🌸

  • DISPLAY — to get the default host and display number.
  • XENVIRONMENT — to get the name of a resource file that overrides the global resources stored in the RESOURCE_MANAGER property.
  • XSCREENSAVER_WINDOW — The window ID to use with --root.

🦋 SEE ALSO 🦋

X(1), xscreensaver(1) — go read those if you want the whole XScreenSaver universe, iykyk. 👑

Copyright © 2003 by Jamie Zawinski. Moo. 🐄

The legal tea, exactly as written:

Permission to use, copy, modify, distribute, and sell this software and its documentation for any purpose is hereby granted without fee, provided that the above copyright notice appear in all copies and that both that copyright notice and this permission notice appear in supporting documentation. Moo. No representations are made about the suitability of this software for any purpose. It is provided "as is" without express or implied warranty. Moo.

👑 AUTHOR 👑

Jamie Zawinski <jwz@jwz.org> — absolute icon. 💖

X Version 11 · 6.15 (30-Mar-2026) — that’s the source/version and date, bestie. Bye! 🐄✨💅

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