Ubuntu Linux: Delete Directory Command in Terminal

How do I delete a directory in terminal using Ubuntu Linux operating systems?

You need to use the rmdir utility / command. The rmdir utility removes the directory entry specified by each directory argument, provided it is empty. Arguments are processed in the order given. In order to remove both a parent directory and a subdirectory of that parent, the subdirectory must be specified first so the parent directory is empty when rmdir tries to remove it.

Tutorial details
Difficulty	Easy (rss)
Root privileges	No
Requirements	rmdir or rm
Estimated completion time	Less than a one minute

Please note directory often referred to as a folder in the Apple Mac OS X and Microsoft Windows operating systems.

Syntax

The syntax is:

rmdir dirName

OR

rmdir [option] dirName

WARNING! These examples may crash your computer or may result into data loss, if executed without proper care.

Remove / Delete directory called /tmp/foo

Open the terminal. Type the following command:
$ rmdir /tmp/foo
To remove foo and bar empty directories, type:
$ rmdir foo bar

Recursive removal

Remove all files and directories including all sub-directories i.e. recursive removal:
$ rm -rf /path/to/directory
$ rm -rf /tmp/foo

Please note that you can also pass -p option to the rmdir command. Each directory argument is treated as a pathname of which all components will be removed, if they are empty, starting with the last most component:
$ rmdir -p /tmp/x/y/z

Deleting directories as a superuser

If directory is owned by root or any other user or if you are getting "access denied/permission denied" message, try:

### Warning: careful with sudo and rm/rmdir command. ### 
### Check twice before you hit [enter] key ###
sudo rmdir /path/to/dir
sudo rm -rf /path/to/dir