finger:tldr:449ab

The command "finger ${user}@${host} -l" is used to display information about a specific user on a remote host.

Here's the breakdown of the command:

• "finger": It is a command-line tool used to gather information about users on a Unix or Linux system.
• "${user}": This is a placeholder representing the username of the user you want to gather information about. You need to replace "${user}" with the actual username.
• "@": This symbol is used to separate the username from the hostname.
• "${host}": This is a placeholder representing the hostname or IP address of the remote system you want to query. You need to replace "${host}" with the actual hostname or IP address.

The "-l" option is used to provide detailed information about the user. It includes details such as the user's full name, login name, office location, phone number, home directory, last login time, and more.

For example, if you want to display information about the user "john" on the host "example.com", you would run the command:

finger john@example.com -l

Make sure to replace "john" with the actual username and "example.com" with the appropriate hostname or IP address.