Question:

Please explain Linux utility "hostnamectl" host (-H) parameter usage case and meaning for a layman to understand.


Answer:

The `-H` parameter in the `hostnamectl` utility is used to specify a different host or computer to perform the operation on.

For example, if you are using `hostnamectl` to change the hostname of a remote computer, you would use the `-H` parameter to specify the hostname of that remote computer. This allows you to manage multiple computers from one place.

In simple terms, the `-H` parameter in `hostnamectl` is like telling the computer, "Hey, I want to do this action on that specific computer, not on the one I am currently using". It helps you manage and make changes to different computers easily.