A lot of information is available about individual files on a Unix system. For example, the ls -l command will display the permissions matrix and ls -i will display a file’s inode.

changes the current file-mode creation mask value to mask. According to UNIX conventions, mask is a one- to three-digit octal number. The file-mode creation mask modifies the file mode of new files.

The /etc/inittab file controls what happens whenever a Unix system is rebooted or forced to change run levels. Let's take a look at the configuration lines that tell your system what it's supposed ...

Here are a few examples of how chmod (change mode) numbers work when permission values are added together: A user with read only permissions would have a permission value of 4. A user with read and ...