logname:tldr:71e8e

The logname command is used in Linux and Unix-based operating systems to display the login name of the current user. It prints the name of the user who is currently logged in and executing the command. When executed, logname retrieves the login name from the system's login records and displays it on the terminal. It is useful in scripts or command-line operations where the username of the currently logged-in user is required. Here's an example of how the logname command can be used: $ logname johnsmith In this example, the command logname returns the username "johnsmith" if the user running the command is currently logged in under that name.