What are Linux file permissions and how do they work?

What are Linux file permissions and how do they work?

Linux file permissions determine who can read, write, or execute a file. They are represented by three sets of permissions: owner, group, and others.

Can you explain the difference between read, write, and execute permissions?

Sure! Read (r) allows viewing the file, write (w) allows modifying it, and execute (x) allows running it as a program.

How can I change file permissions in Linux?

You can change file permissions using the chmod command followed by the permission settings and the file name.

What does the command 'chmod 755 filename' do?

The command 'chmod 755 filename' sets the permissions so that the owner can read, write, and execute, while the group and others can read and execute.