Description: File system permissions are rules that determine who can access and modify files in a file system. These permissions are fundamental for security and data management across various operating systems. Each file and directory in a system has associated permissions that specify the actions users can perform, such as reading, writing, or executing. These permissions are divided into three categories: owner, group, and others. The owner is the user who created the file, the group includes users belonging to a specific group, and others refer to all other users on the system. Permissions are commonly represented using an octal notation system, where each number indicates a set of permissions. For example, a file with permissions 755 allows the owner to read, write, and execute, while the group and others can only read and execute. This permission structure not only helps protect the integrity of files but also allows for controlled collaboration among users, ensuring that only those with the appropriate permissions can make changes. In summary, file system permissions are an essential feature that ensures security and organization in file handling.
