help2man produces simple manual pages from the --help and --version output of other commands

Usage

help2man [option]... executable

Help2man

GTK+, or the GIMP Toolkit, is a multi-platform toolkit for creating graphical user interfaces. Offering a complete set of widgets, GTK+ is suitable for projects ranging from small one-off tools to complete application suites.

nvim ~/.gtkrc-2.0

gtk-theme-name='theme'
gtk-icon-theme-name='icon'

nvim ~/.config/gtk-3.0/settings.ini

[Settings]
gtk-theme-name=theme …

The GNU C Library project provides the core libraries for the GNU system and GNU/Linux systems, as well as many other systems that use Linux as the kernel. These libraries provide cricital APIs including ISO C11, POSIX.1-2008, BSD, OS-specific APIs and more. These APIs include such foundational facilities …

GNU Make is a tool which controls the generation of executables and other non-source files of a program from the program's source files. Make gets its knowledge of how to build your program from a file called the makefile, which lists each of the non-source files and how to compute …

Mailman is free software for managing electronic mail discussion and e-newsletter lists. Mailman is integrated with the web, making it easy for users to manage their accounts and for list owners to administer their lists. Mailman supports built-in archiving, automatic bounce processing, content filtering, digest delivery, spam filters, and more …

GNU nano is a small and friendly text editor. Besides basic text editing, nano offers many extra features, such as an interactive search-and-replace, undo/redo, syntax coloring, smooth scrolling, auto-indentation, go-to-line-and-column-number, feature toggles, file locking, backup files, and internationalization support.

Nano

Inkscape is professional quality vector graphics software which runs on Windows, Mac OS X and GNU/Linux. It is used by design professionals and hobbyists worldwide, for creating a wide variety of graphics such as illustrations, icons, logos, diagrams, maps and web graphics. Inkscape uses the W3C open standard SVG …

Audacity is a free under GPL license, easy-to-use, multi-track audio editor and recorder for Windows, Mac OS X, GNU/Linux and other operating systems. Some features:

• Record live audio
• Convert tapes and records into digital recordings or CDs
• Edit WAV, AIFF, FLAC, MP2, MP3 or Ogg Vorbis sound files
• AC3 …