man is a common Linux command used for viewing system or package manuals.
Sections
| Section | Contents |
|---|---|
| 1 | User Commands |
| 2 | Programming interfaces for kernel system calls |
| 3 | Programming interfaces to the C library |
| 4 | Special files such as device nodes and drivers |
| 5 | File formats |
| 6 | Games and amusements such as screen-savers |
| 7 | Miscellaneous |
| 8 | System administration commands |
Usage
Read
man MANPAGE : read manual (default section)
man SECTION MANPAGE : read manual in the given section
Search
man -k QUERY : search with query (supports regex) in all sections
apropos QUERY : query manpage entries based on one-line descriptions; equivalent to man -k