What does the output list? Why is it so long? Give the same command while working with root privileges (or ask the system administrator to do so and email you the results). How does this list differ from the first? Why is it different?
Give the command:
$ /usr/sbin/fuser -uv
This command displays a list of processes using the root filesystem. The list
is long because all files on the system are children of root; therefore this
command lists all processes using any file or filesystem.
The first list shows only processes owned by the user who gives the com-
mand. When the command is run by a user working with root privileges,
the output shows all processes. The lists are different because the system
does not permit a nonprivileged user to display information about other
users.
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