Where can you find logs of SystemD Unit services?

The logs of SystemD Unit services can be found using the journalctl command. By default, the system journal is stored in a binary format and is accessible through this command.

To view logs of a specific unit, for example nginx.service, use:

journalctl -u nginx.service

Logs may also be stored in the /var/log/ directory in text files, but SystemD primarily uses its own journal.

To view the latest entries, you can use:

journalctl -u unit_name -n 50

where -n 50 shows the last 50 lines.