File Permission and Access Control Lists 📂

Create a simple file and do ls -ltr to see the details of the file.

File Permission

File permissions are a set of rules that determine how files and directories can be accessed.

File permissions are categorized into three main types:

• Read (r): Allows users to view the contents of a file or the names of files within a directory.

• Write (w): Grants users the ability to modify the contents of a file or create, delete, and rename files within a directory.

• Execute (x): Permits the execution of a file as a program or script. For directories, it allows users to access and navigate the directory.

🔐ACL: Access Control Lists

Access Control list is used to control the access of files and directories.

overview of the getfacl and setfacl commands:

getfacl:

The getfacl command is used to display the ACLs (Access Control Lists) of files and directories.

getfacl file_name.txt

setfacl:

The setfacl command is used to set or modify ACLs for files and directories.

setfacl -m u:user_name:rw file_name.txt