There are five(5) main Directory Commands in Linux:
pwd: Displays the path of the present working directory.
Syntax: $ pwd
ls: This Linux command lists all of the files and directories in the present working directory. These are several options and combinations for this command, which will by discussed, with examples, on separate pages.
Syntax: $ ls
cd: Used to change the present working directory.
Syntax: $ cd <path to new directory>
mkdir: Creates a new directory
Syntax: $ mkdir <name (and path if required) of new directory>
rmdir: Deletes a directory
Syntax: $ rmdir <name (and path if required) of directory>