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Date:      Mon, 27 May 2002 00:30:03 -0700 (PDT)
From:      David Taylor <davidt@yadt.co.uk>
To:        freebsd-bugs@FreeBSD.org
Subject:   Re: bin/38573: ping -o option (exit after one reply)
Message-ID:  <200205270730.g4R7U3u46940@freefall.freebsd.org>

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The following reply was made to PR bin/38573; it has been noted by GNATS.

From: David Taylor <davidt@yadt.co.uk>
To: Dima Dorfman <dima@trit.org>
Cc: FreeBSD-gnats-submit@FreeBSD.org
Subject: Re: bin/38573: ping -o option (exit after one reply)
Date: Mon, 27 May 2002 08:19:57 +0100

 On Sun, 26 May 2002, Dima Dorfman wrote:
 > David Taylor <davidt@yadt.co.uk> wrote:
 > > ping -o will exit after receiving a single reply packet, which is useful
 > > for trying to see if a host/link is alive at all (which is what the script
 > > was attempting to to do :).
 > 
 > Isn't this the same as `ping -c 1`?
 
 No, ping -c 1 will exit after *sending* one packet, whether it is received
 or not.
 
 ping -o -c 10 will send (up to) 10 packets, exiting sucessfully after
 receiving the first reply, or exit(2)'ing if it fails to receive a reply
 from any packet.
 
 -- 
 David Taylor
 davidt@yadt.co.uk
 "The future just ain't what it used to be"

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