Under Unix, different documentations are available to learn how to use a command, its options, and its possible arguments.
man: the manual pages¶
man command allows access to the documentation of a command on the terminal.
man is followed by the name of the command for which you want documentation.
man ls man man
man -kallows you to search for a keyword in man pages.
info: hypertext documentation¶
info provides access to documentation that is often more complete than
In contrast to
man which describes a command in a single page (which can be very long),
info uses hypertext to allow a navigation in the documentation.
A summary of the commands under
info is obtained by typing
? When executing 'info'.
info info info ls
/usr/share/doc: the official software documentation¶
When a software is installed from its source code, all documentation is usually placed in
This documentation can be very varied (.txt, .ps, .pdf, etc.) and does not necessarily concern only the use of the command.