File permissions are really important for how we access and change files on our computers. They help keep our data safe and make sure that only the right people can see or change files.

Types of File Permissions:

1. Read (r): This lets you see what’s inside the file.
2. Write (w): This allows you to change what’s written in the file.
3. Execute (x): This means you can run the file as a program.

Why It Matters:

• Studies show that 60% of data leaks happen because file permissions weren't set up correctly.
• Companies that follow strict rules for file permissions can cut down on unauthorized access by 80%.

How Permissions Are Shown:

• Permissions are often displayed in a special number format. For example, chmod 754 breaks down like this:
  • Owner: Read, Write, Execute (7)
  • Group: Read, Execute (5)
  • Others: Read (4)

Managing these permissions the right way is key to keeping our systems safe and working well.