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Date: Fri, 16 Dec 2005 23:17:00 -0800
From: James Long <list@museum.rain.com>
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Cc: hde@foobar-qux.org
Subject: Re: shell script doesnot executing
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> Message: 24
> Date: Fri, 16 Dec 2005 01:51:22 -0600
> From: "Harley D. Eades III" <hde@foobar-qux.org>
> Subject: Re: shell script doesnot executing
> To: Anirban Adhikary <anirban.adhikary@gmail.com>
> Cc: freebsd-questions@freebsd.org
> Message-ID: <1134719482.34653.30.camel@devilBSD.freeBSD>
> Content-Type: text/plain
> 
> On Fri, 2005-12-16 at 11:23 +0530, Anirban Adhikary wrote:
> >   Hi guys
> > This is Anirban here. I have the problem again with the previous shell
> > script.Which was
> > Write a shell script that will check whether a server is up or not(on ping)
> > & log the report to a file.
> > 
> > I have tried to write the program in the following way
> > 
> > #! /bin/sh
> > echo -n "Enter the IP or Hostname of the Server"
> > read host
> > #echo $host
> > ping -c2 $host &>file2
> > if [ $? = 0 ];then
> The problem is you're checking the exit status of ping, even if the host
> is down ping is exiting with a successful status.  You need to use sed
> or awk or something similiar to test for replys.

That is false.  ping exits with a true result code if at least one
ICMP reply is received, false otherwise.