Linux & UNIX /etc/passwd file structure

As a part of one my group tasks in university, we decided to fully understand the Linux passwd file in order to complete our objectives. Whilst researching, I discovered there was more than one password file (read on); it was difficult to distinguish the purpose and difference between the two without having many tabs open. So I created a small document in more-or-less bullet point form, which can hopefully become a useful reference for someone …

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