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Re:FTP is 50 years old by rsync on Friday April 16, 2021 @12:17PM (#26835798)
"What's the oldest protocol that's still regularly used?"

People are answering with old telephone codes and British naval signals, etc.

You should be thinking:

- The muslim call to prayers.

- The affirmation of faith, as it is spoken in mass or (protestant) church ... or the first and second readings, followed by a Gospel reading.

- The Jewish rite of circumcision (which is, among other things, almost certainly a signaling mechanism).

Re:FTP is 50 years old by tpmx on Friday April 16, 2021 @12:33PM (#26836008)
If we're abandoning automation:

https://en.wikipedia.org/wiki/Protocol_(diplomacy)

> The term protocol is derived, via French and Medieval Latin, from the Greek word πρωτόκολλον protokollon "first glued sheet of or onto a papyrus-roll".

> The rules of protocol to create space where meetings can take place.

https://www.protocol.dubai.ae/About/Protocol-History

> The diplomatic relations that existed between Egypt and Babel, which started in 1450 B.C., included highlights on the application of standards for Protocol and Etiquette that were related to both diplomatic immunities as well as receptions and ceremonies.

Re:FTP is 50 years old by stjohnswarts on Friday April 16, 2021 @07:42PM (#26840259)
I would hate to be involved with any generic means of communication that required circumcisions to impart information. That sounds like a rather gory way to tell my wife I'll be late for dinner.
Re:FTP is 50 years old by Talanes on Saturday April 17, 2021 @01:33AM (#26841811)
But it was a great way to tell your wife not to make pork for dinner. At least until it caught on beyond the intended market.