As a rule of thumb, use echo for quick, interactive output and one-off checks. Use printf in scripts, logs, and anywhere output format matters. If you ever find yourself relying on echo options or escape sequences, that’s usually a sign that printf is the better tool.
Lemmy works over ActivityPub, which is the thing that provides the federation, and what people has been accostumed to call Lemmy as a whole. But there is more software that works with AP. No need to create a copy, other software can do similar things (for example: mbin, piefed, mastodon, etc).
Linujs