cd
rmdir
mkdir: Creating a directory which has set of files & sub directories.
Syn:
$mkdir directory name
Example:
$mkdir hyd
$mkdir chennai
cd: Used for changing/closing directory
Example:
$cd chennai
$chennai>
If we want to come back to my previous directory we can use like
$chennai>cd ..
$ cd
If we want to come back more than one directory then
$chennai>places>cd ../.. --> this command is back to 2 directories
rmdir: Used for removes/deletes directory only if is empty.
syn:
$rmdir directory name
Example:
$rmdir chennai