Journal

You can read your journal with journalctl --user.

System Journal vs User Journal

If you skip the --user option, you would normally see the journal for the system. This is not allowed for your user, i.e. all entries from the system (and for other accounts on the system) are hidden.

Query Options

--user

Show the user journal, instead of the sytem journal.

--unit

Show only entries for the given unit. E.g. journalctl --user --unit php-fpm will only show entries for your php-fpm.service (you can drop the .service extension).

--since & --until

Show entries from a given timeframe. You can use a date, time or both (e.g. --since '2006-01-02 15:04:05' --until 16:10), or a time span in multiple formats, like journalctl --user --since '5 minutes ago', or journalctl --user --since yesterday. For a list of supported options see the systemd-time man page.