monerod via the Ubuntu command line. I'm on v0.13 and I want to prune my Monero node's database and take advantage of the v0.14 features. How can I do this? What command do I need to type?
Upgrade to v0.14.x and after you have upgraded and run, the database will be migrated to the latest version. You can then exit the daemon and run
monero-blockchain-prune, which will prune the database.
Note that pruning is not scheduled for release until 0.14.0.1.