Here's the bash script I created for publishing NIP-23 content. Maybe it's useful to someone else:

nostr:naddr1qvzqqqr4gupzq8meqkx80g3yuklzymy0qfx2ekk56aqc2ht4ak03z3em4r4cdcwtqy88wumn8ghj7mn0wvhxcmmv9uq32amnwvaz7tmwdaehgu3wdau8gu3wv3jhvtcqrserqv3495crgtfjxskk6ctjddjx7amw946x7ttwdaehgusuhsm2s

I'm only aware of a single issue right now, which is that nak doesn't seem to like commas in tag content. Other than that, it works just fine for me.