In this article, you will learn how to use the ping command with its available options, including the explanation of output and ping flooding.

In this article, you will learn how to follow the deeply nested soft link (or symbolic link) inside the tree using the readlink command.

In this article, you learn how to print the absolute path of a symbolic link, file, or directory using the realpath command on Linux.

In this article, you will learn five ways to follow symbolic (or soft) links to find the original file to which the symbolic link points.

In this article, you will learn the usage of the whoami command, how to use it in shell scripts, and its alternative commands.

In this article, you will learn the difference between the logname and whoami commands, the usage of the logname command, and how to use it in shell scripts.

In this article, you will learn how to check all the logged-in users in your system using the w command, including its different options (with practical examples).

In this article, you will learn how to use the who command to find all the logged-in user information (with practical examples).

In this article, you will learn how to use the uptime command and its different options (with practical examples) to find out how long a system has been running.

In this article, you will learn four ways to find all logged-in users on the remote machine or server, including the past one (with practical examples).

In this article, you will learn how to lookup the users information in the target machine using the finger command (with practical examples).

In this article, you will learn what utmp, wtmp, and btmp log files are, their purpose, and how to read them using the built-in command tool in Linux.

In this article, you will learn how to use the finger alternative pinky command to list the logged-in users on the target machine and view their information.

In this article, you will learn how to check the historical and statistical information of system uptime using the tuptime command (with practical examples).

In this article, you will learn how to check the record of Linux uptime using the uprecords command and its option (with practical examples).

In this article, you will learn how to check the user's login and logout history using the last command and its option (with practical examples).

In this article, you will learn how to check the log or history of a user's failed login attempts using the lastb command on Linux.

In this article, you will learn how to use the lastlog command on Linux to check the most recent login of all users or a specific user, as well as how to clear a single or all user’s last login records.

In this article, you will learn what file globbing is on Linux and how to use it with various commands through practical examples.

In this article, you will learn how to use the uname command and its options to print kernel, hardware, and operating system information.