sredird(8)

💖 sredird(8) — like, the RFC 2217 serial port server bestie 💖

okay so. pull up a chair, grab a boba, because we're talking about sredird, aka the RFC 2217 serial port server 🎀✨ (and yes, the manual page name is sredird, section 8, iykyk)

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🌸 SYNOPSIS 🌸

sredird [-i] log-level serial-device lock-file [poll-interval]

look at her. four (or five!) little slots and she's ready to serve 💅

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✨ DESCRIPTION ✨

bestie, real talk: this manual page documents sredird, the program, briefly. That's the whole job. Short and iconic. 👑

So here's the vibe. When this program gets run through inetd, it uses the RFC 2217 extensions to TELNET to implement serial commands over the TCP connection, and it interfaces to a serial port you specify. That's it. That's the whole main character arc. 🌈

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💅 OPTIONS 💅

okay this is the part you actually came for, no skipping:

• An optional first parameter is -i — this turns on compatability with Cisco IOS. (yes, the manpage really spells it "compatability", we love her for it 💀)
• The first mandatory parameter is the log level for use in syslog.
• The next mandatory parameter is the device node for the serial device. It must be a fully qualified path. no shortcuts, no "eh it's probably in /dev somewhere", fully qualified. periodt. ⭐
• The final mandatory parameter is the file name for the lock file. This one's important — it's what prevents multiple instances of sredird from talking to the serial port at the same time, or, alternatively, it lets you allow sharing a port between a modem and sredird. 🫶

also there's a poll-interval hanging out in the synopsis, optional and chillin' at the end, and the manpage doesn't say anything else about it. we simply do not elaborate. 🙈

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🦋 EXAMPLE 🦋

here's a configuration line for running it from inetd, copy it exactly bestie:

sredir stream  tcp     nowait  root    /usr/sbin/tcpd /usr/sbin/sredird 5 /dev/modem /var/lock/LCK..modem

ate. 🔥

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👑 AUTHOR 👑

This man page was written by Russell Coker <russell@coker.com.au>. It may be freely used and distributed without restriction under the terms of the GPL. 💜

The sredird program itself was written by Denis Sbragion <d.sbragion@infotecna.it> and Jeffrey Altman <jaltman@columbia.edu>. legends, honestly. 🌟

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and that's the whole page, bestie 🧚✨ this was sredird version 2.2.2, section 8, brought to you by Russell Coker <russell@coker.com.au> — mwah, go lock your serial port 💋🌸