Linux command to create nested directories (a directory inside a directory)

Question

How can I create a hierarchy of directories using a Linux command.

E.g.

For the following directory tree, what command should be used as 'mkdir' does not work.

a/b/c/d

Answer 1

You need to use "-p" option with "mkdir" command to create the nested directory.

$ mkdir -p a/b/c/d