The 'finger' command in Linux is a user information lookup program. It provides details about users on a Linux system. You can use it like this: finger [username] .

The finger command displays a M- before each converted character. When you specify users with the User parameter, you can specify either the user's first name, last name, or account name. When you specify users, the finger command, at the specified host, returns information about those users only in long format.

Finger command is a user information lookup command which gives details of all the users logged in. This tool is generally used by system administrators. It provides details like login name, user name, idle time, login time, and in some cases their email address even.

You use finger to find out information about other users on your network, seeing if they are logged in or if they have received mail. host displays address information about a system on your network, giving you a system's IP and domain name addresses.