Linux file defaults permition

Question

What is Linux file defaults permition?

Answer 1

While user makes a file or directory under Linux, he/she create it along with a default set of permissions. The user file-creation mode mask (umask) is employ to find out the file permission for new files. umask value is 022

In effect without a umask, any file created will have 666 permissions.

666

022

---------

644

---------

A umask of 022 will result in files made with 666 permission.