10. Getting help in text environment

Type yelp in terminal ... you will get the gnome help browser.

man <keyword> will give manual page (Documentation) on the keyword. Man pages are divided into chapters regarding the topic.

chapter type of man page
------- -----------------
1 User commands
2 Kernel system calls
3 Library functions
4 Special Files and relations
5 File format and conventions
6 Games
7 conventions, standards and miscellaneous function
8 System administration commands
9 Linux kernel API

you can type man chapter number also with the keyword
eg:- man 1 passwd AND man 5 passwd will give me different information.

To search relevent man pages (For eg manpages related to passwd) type
man -k passwd

Almost same information will get from pinfo also.
eg:- pinfo passwd