What does chmod numeric mean in Linux?

What does chmod numeric mean in Linux?

The chmod command in Linux is used to change the file permissions. Numeric mode allows you to set permissions using numbers.

How do the numbers correspond to permissions?

In numeric mode, permissions are represented by three digits: owner, group, and others. Each digit can be a sum of read (4), write (2), and execute (1).

Can you give me an example of using chmod numeric?

Sure! To give the owner read and write permissions, and the group and others read permissions, you would use chmod 644 filename.

What if I want to give everyone execute permission?

You would use chmod 755 filename, which gives the owner full permissions and read and execute permissions to group and others.