Linux chattr Command Tutorial for Beginners (5 Examples)

Often a Linux computer is used by different users. So there is a possibility that these users access a common group of files. This opens the door to problems like accidental deletion or editing of important files, which you as an administrator definitely don't want. Fortunately, there is a command called chattr that is designed for just such cases.

Source: Howtoforge Linux Howtos und Tutorials