login:tldr:c3581
login: Log in as a user.
$ login ${user}
try on your machine
This command is called login and it takes an argument or parameter called ${user}. The value of this parameter is likely a username or user ID that is specified by the caller of the command.
The intent of the command is to initiate a login session for the specified user. The exact behavior and implementation of the login command can vary depending on the operating system or software being used. However, typically, when this command is executed, the system prompts the user to enter their password (if applicable) and verifies it against the stored credentials for the given user. If the authentication is successful, the user is granted access to the associated resources and privileges of their account.
This explanation was created by an AI. In most cases those are correct. But please always be careful and
never run a command you are not sure if it is safe.