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Note that Mac OS X, as one of the BSDs, has SIGINFO; note that
Digital/Tru64 UNIX has it as well (although the tty(7) man page doesn't mention VSTATUS - stty(1) mentions "status", however, and signal(4) mentions SIGINFO, and some Tru64->HP-UX transition pages mention SIGINFO as a feature available in Tru64 but not HP-UX). Note that on some systems (e.g., Mac OS X), you might have to set your "status" character as it defaults, on those systems, to "not set". Get rid of the reference to "traffic(1C)" (it's not referred to in the man page, and about the only connection it has with tcpdump is that they both watch network traffic; traffic(1C) is a SunOS 4.x-ism, not present on other platforms), and add a reference to pfconfig(8) for Digital/Tru64 (it *is* referred to, in the section of what privileges you need in order to capture traffic).
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tcpdump.1
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tcpdump.1
@ -1,4 +1,4 @@
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.\" @(#) $Header: /tcpdump/master/tcpdump/Attic/tcpdump.1,v 1.154 2003-11-23 23:42:17 guy Exp $ (LBL)
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.\" @(#) $Header: /tcpdump/master/tcpdump/Attic/tcpdump.1,v 1.155 2004-01-07 22:50:40 guy Exp $ (LBL)
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.\"
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.\" $NetBSD: tcpdump.8,v 1.9 2003/03/31 00:18:17 perry Exp $
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.\"
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@ -146,10 +146,14 @@ in the OS on which
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is running, if the OS reports that information to applications; if not,
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it will be reported as 0).
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.LP
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On platforms that support the SIGINFO signal, such as most BSDs, it will
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report those counts when it receives a SIGINFO signal (generated, for
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example, by typing your ``status'' character, typically control-T) and
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will continue capturing packets.
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On platforms that support the SIGINFO signal, such as most BSDs
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(including Mac OS X) and Digital/Tru64 UNIX, it will report those counts
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when it receives a SIGINFO signal (generated, for example, by typing
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your ``status'' character, typically control-T, although on some
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platforms, such as Mac OS X, the ``status'' character is not set by
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default, so you must set it with
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.BR stty (1)
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in order to use it) and will continue capturing packets.
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.LP
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Reading packets from a network interface may require that you have
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special privileges:
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@ -2103,7 +2107,7 @@ is made to account for the time lag between when the
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ethernet interface removed the packet from the wire and when the kernel
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serviced the `new packet' interrupt.
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.SH "SEE ALSO"
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traffic(1C), nit(4P), bpf(4), pcap(3)
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stty(1), pcap(3), bpf(4), nit(4P), pfconfig(8)
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.SH AUTHORS
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The original authors are:
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.LP
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