How to get help in Linux?

Most system applications and commands that run in console mode in the Linux operating system have accompanying documentation in the form of manual pages. To access them, you can use the man program, with the following format:

man <command>

where is the name of the application for which you want to get information. If a manual exists for the selected command, man will print the first page on the screen and provide the user with means to navigate the rest. You can see a detailed description of the functions with the following command:

man man

04_man.png

The important keys that you can use while working in the program are PgUp for scrolling up a page, PgDn for scrolling down a page, and the q key for exit.