When your home directory has enough files to make listing them on your terminal screen difficult, you are ready to use the UNIX subdirectory facility. This memo gives you the tools, the commands used to create and deal with subdirectories.
Directory names are simply file names in their parent directory.
Create a directory. If the directory does not exist, mv will assume you mean to simply rename the file. This document has been requested 1196 times since July 20, 1999.