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See 'chmod' below about how to change the permissions.
Change Directory
cd : to change to your home directory
cd directory-name : to change to another directory
cd - : to change back to the previous directory
Directory Abbreviations
~ : home directory (tilde) home directory of the user
~username : another user's home directory
. : current or working directory
.. : parent of working directory
Make (or Create) Directory
mkdirdirectory-name : create a directory called directory-name
options:
-p parents: no error if existing, make parent directories as needed
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