Hands-On Mac (Video)

HOM 14: Aliases, What Are They Good For? - Aliases, soft links, and hard links explained

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An alias can be used anywhere you can use a file or folder

  • Soft Links (ln -s original alias)
  •  can cross the file system,
  •  allows you to link between directories,
  •  has different inode number and file permissions than original file,
  •  permissions will not be updated,
  •  has only the path of the original file, not the contents.
  • Hard Links (ln original copy)
  •  can't cross the file system boundaries (i.e. A hardlink can only work on the same filesystem),
  •  can't link directories,
  •  has the same inode number and permissions of original file,
  •  permissions will be updated if we change the permissions of source file,
  •  has the actual contents of original file, so that you still can view the contents, even if the original file moved or removed.

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