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The main functions of the log are: auditing and monitoring. It also enables real-time monitoring of system status, monitoring and tracking of intruders, and so on. One of the keys to successfully managing any system is to know what is going on in the system. Exception logs are provided in Linux, and the details of the logs are configurable. Linux logs are stored in clear text, so users do not need special tools to search and read them. You can also write scripts that scan these logs and automatically perform certain functions based on their content. The Linux logs are stored in the/var/log directory.

The last command searches back wtmp to display the user who has logged in since the file was first created. The system administrator can periodically audit and check the login status of these users, so as to identify the problems, determine the illegal users and deal with them. Run the command as follows:

You can view all log-in time and the corresponding IP

AC qq:2881064157

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