I am pretty new in Linux and I have a doubt related to the use of the chown command use.
If I have something like this:
chown -R root:root /usr/share/MyApplicationDirectory
What exactly mean?
I think that I am changing the owner of all directory and files content into MyApplicationDirectory assigning them to the root user
But why it specify: root:root and not only root?
Reading the documenation I have found that the syntax is
chown [optuion] [--] user[:group] file1 [file2 …]
So I think that the :root is the group. But why? exist a :root group also a root user?