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.

The /opt file system is a relative newcomer to Unix file systems and is primarily used to house optional software packages. /tmp was and still is, of course, intended for temporary files.

A feature of Linux and Unix operating systems, access control lists, which define the permissions for the file, are often stored as extended file attributes. System Attributes. Extended file ...

For UNIX System Services files that are created by SAS, the file mode for new files is "-rw-rw-rw-"; however, this mode is modified by the current file-mode creation mask. For example, x umask 022 ...

The Be operating system file system, known simply as BFS, is the file system for the Haiku, BeOS, and SkyOS operating systems. When it was created in the late '90s as part of the ill-fated BeOS ...

A file access classification that determines how a file can be viewed or whether it can be edited. File attributes are maintained in the file system's directories, and typical attributes are Read ...

On the left side of the directory listing are each file's UNIX permissions. File permissions which end in "@" or "+" indicate files that have extended attributes attached to them.

A file system provides attributes for files and directories on an operating system to help you determine which users on your computer can read, modify, or execute the contents of its files and ...

The UNIX file system underneath Mac OS X allows you to create user groups, with ownership privileges for files or folders you select. But to create new groups, you have to navigate Apple’s ...

Unix generally divides permissions in user, group, and “world,” meaning all other users of the system for read, write, execute, and a few extras typically needed only by system files.