Manual
man [command]
- get help on the commandman [section-number] [command]
- get help on the command in the section given by * section-numberman -k [keyword]
- find the commands which deals with the keywordman -f [command]
- one line help on the commandapropos
is same as theman -k
command - used to find commands associated with a particular * keywordwhatis
is same as theman -f
command - used to ge one line help on a command