====== Manually retrieve calendar data ======

Actually, had to do this on an old Owncloud instance where I was not able to export the calendar data to be imported into a new NextCloud instance.

  - On Old Server
    - Log into the database for OwnCloud
    - Find the calendarid of the user in question (don't remember query)
    - exit database
    - execute following command<code bash>mysql owncloud -e 'select calendardata from oc_clndr_objects where calendarid = 32' > calendar32.ics
    - copy to workstation
  - On Workstation
    - Open with geany
      - search and replace all '\n' with nothing. If you feel brave, replace with newlines
      - convert to Linux line endings
      - save
    - Open Thunderbird
      - Go to calendar
      - File | Open, find ics file
      - Export Calendar
    - Open Nextcloud web interface
      - Calendars
      - Import