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Path: euryale.cc.adfa.oz.au!newshost.anu.edu.au!harbinger.cc.monash.edu.au!munnari.OZ.AU!news.hawaii.edu!news.uoregon.edu!news-res.gsl.net!news.gsl.net!news.mathworks.com!newsfeed.internetmci.com!news.sprintlink.net!news-stk-200.sprintlink.net!EU.net!usenet2.news.uk.psi.net!uknet!usenet1.news.uk.psi.net!uknet!dispatch.news.demon.net!demon!awfulhak.demon.co.uk!awfulhak.demon.co.uk!awfulhak.demon.co.uk!not-for-mail From: brian@awfulhak.demon.co.uk (Brian Somers) Newsgroups: comp.sys.sun.admin,alt.sys.sun,comp.unix.bsd.misc,comp.unix.programmer,comp.unix.bsd.bsdi.misc,comp.unix.admin Subject: Re: ping script Followup-To: comp.sys.sun.admin,alt.sys.sun,comp.unix.bsd.misc,comp.unix.programmer,comp.unix.bsd.bsdi.misc,comp.unix.admin Date: 29 Jul 1996 16:29:28 +0100 Organization: Coverform Ltd. Lines: 17 Message-ID: <4tilco$bm@anorak.coverform.lan> References: <Pine.SOL.3.93.960702171209.4062B-100000@gold.acns.fsu.edu> <4sbfat$ll@keyhole.west.spy.net> <4t2put$n1i@news.fsu.edu> <Dv38zE.8v3@tip.nl> NNTP-Posting-Host: localhost.coverform.lan X-NNTP-Posting-Host: awfulhak.demon.co.uk X-Newsreader: TIN [version 1.2 PL2] Xref: euryale.cc.adfa.oz.au comp.sys.sun.admin:71462 alt.sys.sun:10458 comp.unix.bsd.misc:1276 comp.unix.programmer:40320 comp.unix.bsd.bsdi.misc:4420 comp.unix.admin:45481 Marc Mulhuijzen (marc.mulhuijzen@tip.nl) wrote: : Maybe it is already said but ping does NOT garantee that a system is : up and running ! I have written a tool which reads/writes messages : through sockets, so that one knows that processes are running on a : system, while ping only gets replys from the controller. (A system can : still be pinged and hang at the same time, that's why I wrote my stuff : with help of others as well !) Well, replies from the low-level networking code.... What you really need is to include a "hello are you there" ability in your server. Most - if not all - internet protocols have this (connect, read a prompt, send quit, read OK). Anyone know of any tcp chat-like programs ? -- Brian <brian@awfulhak.demon.co.uk> Don't _EVER_ lose your sense of humour....