OS Two-Level Directory Systems
Two-level directory systems is used to avoid the problem caused by the single-level directory system, we have learned in previous tutorial.
In two-level directory systems, give each user a private directory.
Therefore in this two-level directory system, names chosen by one user don't interfere with names chosen by a different user and there is no any problem that is caused by the same name occurring in two or more than two directories.
The figure given below shows this system:
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