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: Allows running a file as a program or entering a directory. 3. Numeric (Octal) Representation Permissions are often expressed as a three-digit number: 4 : Read 2 : Write 1 : Execute 0 : No permission

: Represented as r , giving the user the ability to read the file contents. rpSQso oNOEv usSNxV

For detailed technical guidance, you can refer to resources like Linux File Permissions Explained or the Ask Ubuntu documentation . : Allows running a file as a program or entering a directory

: Allows modifying or deleting a file, or adding/removing files in a directory. For detailed technical guidance, you can refer to

file permissions: give write permissions to system - Ask Ubuntu

To calculate a permission set, you add the values together. For example, provides full Read, Write, and Execute access. Permission Read & Write rw- Read & Execute r-x Full Permissions rwx 4. Common Commands You can modify these permissions using the chmod utility: