this post was submitted on 06 Jan 2024
174 points (97.8% liked)
Asklemmy
43761 readers
1124 users here now
A loosely moderated place to ask open-ended questions
Search asklemmy ๐
If your post meets the following criteria, it's welcome here!
- Open-ended question
- Not offensive: at this point, we do not have the bandwidth to moderate overtly political discussions. Assume best intent and be excellent to each other.
- Not regarding using or support for Lemmy: context, see the list of support communities and tools for finding communities below
- Not ad nauseam inducing: please make sure it is a question that would be new to most members
- An actual topic of discussion
Looking for support?
Looking for a community?
- Lemmyverse: community search
- sub.rehab: maps old subreddits to fediverse options, marks official as such
- !lemmy411@lemmy.ca: a community for finding communities
~Icon~ ~by~ ~@Double_A@discuss.tchncs.de~
founded 5 years ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
Technically speaking, it wasn't replaced by IP-based utilities, since they have different functions. Zmodem is intended for sending binary files over an ASCII-based (7-bit) serial line, whereas the Internet-based protocols send files over IP, which is a packet-based networking protocol. That's where the performance difference comes in, since TCP/IP has significant overhead in the form of TCP and IP headers in each 1500-byte packet, plus extra processing costs on each end. That overhead brings with it far more flexibility in connecting to any arbitrary host on the network to transfer files, not just the two on either end of a serial line.
(It wasn't even replaced, since it's still available on my computer right now, installed as a dependency of something or other. I think the last time I used it was to transfer a file to an embedded device.)