crystal - Man Page

• Run a Crystal file: crystal path/to/file.cr
• Compile a file and all dependencies to a single executable: crystal build path/to/file.cr
• Read Crystal source code from the command line or stdin, and execute it: crystal eval 'code'
• Generate API documentation from inline docstrings in Crystal files: crystal docs
• Compile and run a Crystal specification suite: crystal spec
• Start a local interactive server for testing the language: crystal play
• Create a project directory for a Crystal application: crystal init app application_name
• Display all help options: crystal help

tldr.sh

crystal [--display host:display.screen] [--visual visual] [--window] [--root] [--window-id number] [--grid] [--no-cell] [--centre] [--nx number] [--ny number] [--count number] [--delay number] [--ncolors number] [--fps]

Moving polygons, similar to a kaleidescope (more like a kaleidescope than the hack called `kaleid,' actually.)

--visual visual

Specify which visual to use.  Legal values are the name of a visual class, or the id number (decimal or hex) of a specific visual.

--window

Draw on a newly-created window.  This is the default.

--root

Draw on the root window.

--window-id number

Draw on the specified window.

--grid | --no-grid

Whether to draw grid.

--cell | --no-cell

Whether to draw the cell.

--centre | --no-centre

Whether to center on screen

--nx number

Horizontal Symmetries. -10 - 10.  Default: -3.

--ny number

Vertical Symmetries.  -10 - 10.  Default: -3.

--count number

Count. -5000 - 5000.  Default: -500.

--delay number

Per-frame delay, in microseconds.  Default: 60000 (0.06 seconds.).

--ncolors number

Number of Colors.  Default: 100.

--fps

Display the current frame rate and CPU load.

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.

X(1), xscreensaver(1)

Copyright © 2002 by Jouk Jansen.  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.  No representations are made about the  suitability of this software for any purpose.  It is provided "as is" without express or implied warranty.

Jouk Jansen.