System Files

System Files

Copyright(c) Management Analytics, 1995 - All Rights Reserved

Copyright(c), 1990, 1995 Dr. Frederick B. Cohen - All Rights Reserved

By convention, system files under UNIX are stored under specific names in specific places in the file-structure. There are a lot of files and directories used for UNIX system files, and we will only describe those which are most important to systems administration and protection. Some filenames depend on the specific UNIX version you are using, but most of them are uniform across all implementations.

The root directory normally contains the following:

The `/usr' and `/etc' directories are particularly important to the systems administrator because they contain many of the critical configuration and user files. We begin with the files in /etc:

The directories in `/usr' are less critical to system operation: