l have problem how to use this commands. And l also want some show all commands in linux or unix how to use them.
Thanks
makewhatis reads all the manual pages contained in the given sections of manpath or the preformatted pages contained in the given sections of catpath. For each page, it writes a line in the whatis database; each line consists of the name of the page and a short description, separated by a dash. The description is extracted using the content of the NAME section of the manual page.
Since other languages use a different term for the NAME section, makewhatis recognizes the equivalent terms in Czech, Italian, Finnish, French, German and Spanish.
If no manpath argument is given, /usr/man is assumed by default. OPTIONS
-u Update database with new pages. -v Verbose output -w Use manpath obtained from `man --path` -s sections Looks in the sections of manpath or catpath. If the option is absent, its value is assumed to be '1 2 3 4 5 6 7 8 9 n l' -c catpath The preformatted manual pages located in catpath are scanned. If the argument is not provided, it is assumed to be the first existing directory between /usr/man/preformat and /usr/man.