What is utmp, wtmp, btmp, and How Do You Read Them??

Whenever you do a login, logout, or attempt to log in, everything gets recorded on your system, and there is a specific command that you can use to find out who has logged into your Linux system.

In this article, you will see a binary file that is responsible for maintaining records and how to read the binary file using the “utmpdump“ utility.

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Source: Linux Today