Question

How to use help command in linux to fetch details of commands like mkdir,ls etc...
I get error use it

help -m ls
-bash: help: no help topics match `ls". Try `help help" or `man -k ls" or `info ls".

Answer 1

The help command is limited and it is not possible to get info about all the commands using help keyword.

To find complete details about ls command you need to use man ls command in the terminal.