Even though the root account is "disabled" by default in OS X, you will still see many system processes running under this account when you open Activity Monitor, which might be confusing to some ...

Enabling the root user on a Mac grants you the highest level of access to the system, allowing you to perform tasks that require deep system modifications. However, this powerful account is disabled ...

The fuser (pronounced “ef-user”) command is a very handy command for determining who is currently using a particular file or directory. If one user can’t access a file because another user has it ...