ZEPHYR(1)

👑 ZEPHYR(1) — the manual page bestie 💖

okay so real talk, this is the zephyr page from the General Commands Manual, and it's giving absolute legend energy because Zephyr has been doing notice delivery since literally forever. sit down, grab a strawberry 🍓, and let's get into it.

✨ NAME ✨

zephyr — the Zephyr Notification Service 💌

🌸 DESCRIPTION 🌸

Zephyr is a notice transport and delivery system, and it was developed at MIT and it runs under 4.3BSD Unix. periodt.

so like, a Notice Transport and Delivery system is basically a method of getting small quantities of time sensitive information efficiently from one client (or server) on a network to another. the whole goal? the highest possible fan-out (that's the client to server ratio, iykyk) while still maintaining both network and server performance. no cap. Zephyr is a multi-cast notice transport and delivery system based upon an authenticated datagram protocol. localized Zephyr servers provide routing, queueing and dispatching services to clients which communicate with them via the Zephyr Client Library. and then there are two special purpose Zephyr clients — the WindowGram client and the HostManager client — and they provide user and client host communication support. iconic behavior honestly. 🫶

Zephyrd(8) servers run on designated server machines. these servers maintain a database of subscriptions and locations for every user using Zephyr. and the way they stay in contact with one another?? bestie. they provide a reliable backup system (via duplication) in the event of network failures. that's the mutual support we love to see 💅

each client machine on the network runs a zhm(8) HostManager client program, which is the link between the Zephyr servers and the users. user programs send notices to the HostManager, and the HostManager forwards these notices to the nearest server for action. the HostManager is responsible for ensuring that the notices reach a server, and for finding a new one if its server fails to respond. main character energy, truly. 🔥

each user on the network usually runs a WindowGram client program automatically upon login. Zwgc(1) displays notices to the user, and handles user responses. only notices to which the user has subscribed will be sent to the WindowGram client — so like, no random spam, we love boundaries. 🙈

subscriptions are handled through the zctl(1) program. this program allows the user to add or delete subscriptions from Zephyr, to add the subscriptions to a file, and to perform other miscellaneous functions. slay. ✨

🦋 SEE ALSO 🦋

• kerberosintro(1)
• zaway(1), zctl(1), zleave(1), zlocate(1), znol(1), zwgc(1), zwrite(1), zmailnotify(1)
• zhm(8), zephyrd(8), zinit(8), zstat(8), zpopnotify(8), zshutdown_notify(8), syslogd(8)
• Project Athena Technical Plan Section E.4.1, Zephyr Notification Service 📚

💖 AUTHORS 💖

these absolute legends built it, show some respect:

• Tony Della Fera (MIT-Project Athena, DEC)
• Mark W. Eichin (MIT-Project Athena)
• Robert S. French (MIT-Project Athena)
• David C. Jedlinsky (MIT-Project Athena)
• John T. Kohl (MIT-Project Athena, DEC)
• William E. Sommerfeld (MIT-Project Athena)

🎀 RESTRICTIONS 🎀

okay bestie, this part is the legal bit and it is NOT a vibe to skip, so here it is in full. 💀

Copyright (c) 1987,1988,1989 by the Massachusetts Institute of Technology. All Rights Reserved.

Permission to use, copy, modify, and distribute this software and its documentation for any purpose and without fee is hereby granted, provided that the above copyright notice appear in all copies and that both that copyright notice and this permission notice appear in supporting documentation, and that the name of the Massachusetts Institute of Technology not be used in advertising or publicity pertaining to distribution of the software without specific, written prior permission.

M.I.T. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL M.I.T. BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

and that's the whole page, bestie 💅 this was put out by MIT Project Athena back on July 1, 1988, and it's still out here being ZEPHYR(1) like the icon it is. go forth and subscribe to things. 🦋✨