mkdir directory_name ...
The user must have write permission in the parent directory.

• Create a directory:
  $ mkdir folder
  
• Create multiple directories and optionally their sub-directories:
  $ mkdir folder folder/folder1 folder/folder2
  
• You can use the option -p to create a sub-directory and its parents if they don't exist:
  $ mkdir -p folder/folder2
  
• Create a directory with a specific permission:
  $ mkdir -m 777 folder

The following options can be used:
-m <mode> |Set the file permission mode of the created directory. |The mode argument can be in any of the formats specified by the chmod command. |If a symbolic mode is specified, the operation characters "+" and "-" are interpreted relative to an initial mode of "a=rwx". -p |Create intermediate directories as required. |If this option is not specified, the full path prefix of each operand must already exist. |On the other hand, with this option specified, no error will be reported if a directory given as an operand already exists. |Intermediate directories are created with permission bits of rwxrwxrwx (0777) as modified by the current umask, plus write and search permission for the owner. -v |Cause mkdir to be verbose, showing files as they are created.