id:tldr:c1b27
id: Display the current user identity as a number.
$ id -u
try on your machine
The "id -u" command is used to display the user ID (UID) of the current user logged into the system.
In Linux and Unix-based operating systems, each user is assigned a unique identifier known as the UID. The UID is used by the system to associate various permissions and privileges to each user.
When you run the "id -u" command, it simply retrieves and displays the numeric UID of the user executing the command. This number is typically used internally by the system and is not as easily understandable as a username.
For example, if the command returns "1000", it means that the current user's UID is 1000. This UID can be used by various system processes and applications to determine the user's permissions and access levels.
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.