5. Controlling Ownership and Permissions
In This Chapter
Understanding File Ownership and Permissions
Finding Out Which Group You’re In
Changing the Group Association of Files and Directories with chgrp
Changing Ownership of Files and Directories with chown
Changing Permissions with chmod
Unix, Linux, and Unix-like operating systems are multiuser systems in which your files are separate from Jane’s files, which are separate from Joe’s files, and so on. Any file you create is separate from other users’ files and usually cannot be directly accessed by Jane, Joe, or any other user. The file permissions determine what you can ...
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