intro

man [section] intro

The intro is not a standalone executable Linux command but refers to the introductory manual pages in the man documentation system. These pages provide overviews for different categories of commands, system calls, libraries, and more. Access them via man 1 intro for user commands (section 1), man 2 intro for system calls (section 2), man 3 intro for library functions, and similar for other sections up to 8.

Each intro page outlines conventions, standard behaviors, common options (like -h or --help), error handling, and navigation tips within that section. For instance, section 1 intro describes executable programs invoked from the shell, their typical structure, environment variables, and signals. These pages are essential for new users and developers to grasp the scope and standards of Linux/Unix tools.

Installed via packages like manpages or manpages-dev, they form the backbone of Linux documentation alongside info pages. Always check your system's man pages as content varies slightly by distribution.

No binary intro command exists; it's man page only. Some distros may lack certain section intros. Use man -k intro to search.

1: User commands
2: System calls
3: Libraries
4: Devices
5: Formats
6: Games
7: Misc
8: Admin tools

Originated in 1970s Unix man pages at Bell Labs; evolved through BSD, GNU, and Linux. Maintained in manpages project since 1990s.

man(1), info(1), whatis(1), apropos(1)