journalctl:tldr:87c60
journalctl: Show all messages by a specific [u]nit.
$ journalctl -u ${unit}
try on your machine
The command journalctl -u ${unit} is used to view systemd logs for a specific unit.
Here's a breakdown of the command:
journalctl: It is a command-line utility in Linux systems used to query and view logs from the systemd journal.-u ${unit}: This is an option that specifies the unit for which the logs are to be displayed. In this command,${unit}is a placeholder where you need to provide the actual unit name. The unit can be a systemd service, socket, timer, or other types of units.
When you replace ${unit} with the name of the unit you want to inspect, the command will display the logs related to that unit.
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.