eqn - Linux
Overview
eqn is a powerful text processing tool designed to format mathematical equations for typesetting. It converts mathematical expressions written in a simplified syntax into typeset equations suitable for inclusion in LaTeX documents or other scientific publications.
Syntax
eqn [options] [file...]
Options/Flags
- -d, –debug: Print debugging information.
- -e, –error-stop: Stop processing on the first error encountered.
- -f, –format=FORMAT: Specify output format (default: latex).
- -h, –help: Display help and usage information.
- -l, –line-length=LENGTH: Set maximum line length for output (default: 79).
- -m, –macro=NAME: Define a macro.
- -p, –preprocessor=PREPROCESSOR: Specify preprocessor to use (default: tex).
- -q, –quiet: Suppress diagnostic output.
- -v, –version: Display version information.
Examples
Simple equation:
eqn x^2 - y^2
Complex equation with macros:
eqn
macro d(f,x) diff(f,x)
macro t(x) theta(x)
d(t(x),x) + t(x) = 0
Common Issues
- Syntax errors: eqn is sensitive to syntax errors. Ensure proper equation formatting and balanced parentheses.
- Unsupported symbols: eqn may not recognize certain special symbols or mathematical functions. Use macros or escape sequences to define them.
- Long equations: eqn imposes a line length limit. Use line breaks or explicit continuation characters to handle long equations.
Integration
eqn can be used in conjunction with other tools for advanced tasks:
- LaTeX: Use eqn to generate math expressions for inclusion in LaTeX documents.
- ASCII art: Convert equations to ASCII art for display in text-based environments.
- Image generation: Export equations as graphical images for presentations or documentation.
Related Commands
- tex: LaTeX typesetting system
- latex: Command-line interface to LaTeX
- asy: Asymptote vector graphics language for scientific diagrams