info

info linux command cheatsheet by Thamizhiniyan C S

Introduction

This command is used to read the documentations of commands in the Info Format. It's an alternative to the man page. The info command reads the info files, which are stored as nodes in tree structure. Each info file contains hyperlinks to the next node. Using hyperlinks another nodes can be accessed.

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Syntax

info [OPTION]... [MENU-ITEM...]

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Important Flags

Flag	Description
-a, –all	Use all matching manuals.
-k, –apropos=STRING	Look up STRING in all indices of all manuals.
-d, –directory=DIR	Add DIR to INFOPATH.
-f, –file=MANUAL	Specify Info manual to visit.
-h, –help	Display this help and exit.
-n, –node=NODENAME	Specify nodes in first visited Info file.
-o, –output=FILE	Output selected nodes to FILE.
-O, –show-options, –usage	Go to command-line options node.
-v, –variable VAR=VALUE	Assign VALUE to Info variable VAR.
–version	Display version information and exit.
-w, –where, –location	Print physical location of Info file.

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Interactive Mode Commands

Command	Description
?	Display command help
PAGE UP or BACKSPACE	Display previous page
PAGE DOWN or spacebar	Display next page
n	Next—display the next node
p	Previous—display the previous node
U	Up—display the parent node of the currently displayed node, usually a menu
ENTER	Follow the hyperlink at the cursor location
Q	Quit

Examples

Command	Description
info	show top-level dir menu
info -a ls	It uses all matching manuals and displays them for a particular command.
info -k ls	It looks up STRING in all indices of all manuals and then displays the same.
info -d ls	It adds DIR to INFOPATH and also displays the same.
info -O ls	It goes to the command-line options node for a particular command and displays the same.
info -w ls	It prints the physical location of the Info file.
man info	To check the manual page of the info command.
info --help	To check the help page of the info command.
info info-stnd	show the manual for this Info program
info emacs	start at emacs node from top-level dir
info emacs buffers	select buffers menu entry in emacs manual
info emacs -n Files	start at Files node within emacs manual
info '(emacs)Files'	alternative way to start at Files node
info --show-options emacs	start at node with emacs' command line options
info --subnodes -o out.txt emacs	dump entire emacs manual to out.txt
info -f ./foo.info	show file ./foo.info, not searching dir