NET 4000 Chapter Notes - Chapter 7.9.4: Chmod, Superuser, Octal
Document Summary
Every file and directory in the linux file system has an inode (information node) that stores information about the file or directory, including when it was last modified, size, data block location, permissions, and ownership. The portion of the inode that stores permission information is called the mode. Other permissions (everyone else on the linux system who is not an owner or a member of the owning group) There are three types of permissions contained in the mode, each of which is described in the table below: List directory contents if the execute permission is also present. Add, delete, and rename files if the execute permission is also present. Execute the file, if it"s a program file or a shell script (must be used in conjunction with the read permission) Permissions are identified with either the letter abbreviation (r, w, or x), or the octal value that corresponds to the permission. The following graphic depicts how permissions are referenced:
