greil@guug.guug.de (Anton Greil) (04/20/91)
How to build a procedure in UNIX (e.g. System V.3), which supervises a modem
in a UUCP (BNU) environment?
A procedure, which is periodically called by cron (e.g. all 15 minutes),
to examine if a modem is usable or just used (by cu, uucico) and not hanging
in some undefined state.
If the modem or its UNIX environment is not ok, the procedure should do a
reset of the serial line and/or a reset of the (Hayes compatible) modem by
"Uutry -r -x9 modem" with a setup-entry in the "Dialers" file, and a reset
of ... (???)
If the resets are not possible for the procedure, it notifies the system
administrator. The modem port is to be used bidirectionally by uugetty.
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Radically asked:
Is the problem of supervising a modem solvable by an algorithm?
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Because of the long coexistence of UNIX, UUCP, system administrators and modems
I'm full of hope to find some proofed solutions for this everyday problem !
Toni Greil, Muenchen (Germany)
greil@guug.guug.de