linux how to get help

Posted by Tully on Mon 11 May 2009


Man is an interface to the on-line reference manuals


A section, if provided, will direct man to look only in that section of the manual. The default action is to search in all of the available sections, following a pre-defined order and to show only the first page found, even if page exists in several sections.

Section 1

User programs and shell commands

Section 2

Kernel functions

Section 3

Library functions

Section 4

Special files found in /dev

Section 5

File format descriptions and conventions

Section 6


Section 7

Miscellaneous conventions

Section 8

Utilities used by root

Section 9

Kernel routines

Searching Man Pages

man -k KEYWORD


The GNU Project distributes most of its on-line manuals in the Info format, which you read using an Info reader.

  • The information displayed by the info utility is called a node.
  • To search for information in info, press ctrl-s and then enter your search term.

Readme files

README files usually contain the following types of information:

  • Version numbers
  • Program descriptions
  • Change logs
  • Installation and configuration information
  • Known issues
  • Bug reporting information
  • Copyright information

README files are usually located in either /usr/share/doc/packages or /usr/share/doc.

Linux Documentation Project

TLDP (The Linux Documentation Project)

Linux vendor websites usually include the following:

  • Knowledge bases
  • Documentation
  • Support forums