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Annotation of cci/usr/src/man/man1/netstat.1, revision 1.1

1.1     ! root        1: .TH NETSTAT 1 "18 October 1982"
        !             2: .UC 4
        !             3: .SH NAME
        !             4: netstat \- show network status
        !             5: .SH SYNOPSIS
        !             6: .B netstat
        !             7: [ 
        !             8: .B \-Aahimnrs
        !             9: ] [
        !            10: .B \-p
        !            11: .I protocol 
        !            12: ] [
        !            13: .B \-a
        !            14: ] [
        !            15: .I interval
        !            16: ] [
        !            17: .I system
        !            18: ] [
        !            19: .I core
        !            20: ]
        !            21: .SH DESCRIPTION
        !            22: The
        !            23: .I netstat 
        !            24: command symbolically displays the contents of various network-related
        !            25: data structures.  The options have the following meaning:
        !            26: .TP 
        !            27: .B \-A
        !            28: show the address of any associated protocol control blocks; used
        !            29: for debugging
        !            30: .TP
        !            31: .B \-a
        !            32: show the state of all sockets; normally sockets used by
        !            33: server processes are not shown
        !            34: .TP
        !            35: .B \-h
        !            36: show the state of the IMP host table
        !            37: .TP
        !            38: .B \-i
        !            39: show the state of interfaces which have been auto-configured
        !            40: (interfaces statically configured into a system, but not
        !            41: located at boot time are not shown)
        !            42: .TP
        !            43: .B \-m
        !            44: show statistics recorded by the memory management routines
        !            45: (the network manages a ``private share'' of memory)
        !            46: .TP
        !            47: .B \-n
        !            48: show network addresses as numbers (normally 
        !            49: .I netstat
        !            50: interprets addresses and attempts to display them
        !            51: symbolically)
        !            52: .TP
        !            53: .BI \-p " proto"
        !            54: show the state of sockets utilizing protocol
        !            55: .IR proto ;
        !            56: the protocol is specified symbolically, and may be any
        !            57: protocol listed in the file
        !            58: .IR /etc/protocols .
        !            59: .TP
        !            60: .B \-s
        !            61: show per-protocol statistics
        !            62: .TP
        !            63: .B \-r
        !            64: show the routing tables
        !            65: .PP
        !            66: The arguments, 
        !            67: .I system
        !            68: and
        !            69: .I core
        !            70: allow substitutes for the defaults ``/vmunix'' and ``/dev/kmem''.
        !            71: .PP
        !            72: If an 
        !            73: .I interval
        !            74: is specified,
        !            75: .I netstat
        !            76: will continuously display the information regarding packet
        !            77: traffic on the configured network interfaces, pausing
        !            78: .I interval
        !            79: seconds before refreshing the screen.
        !            80: .PP
        !            81: There are a number of display formats, depending on the information
        !            82: presented.  The default display, for active sockets, shows the local
        !            83: and remote addresses, send and receive queue sizes (in bytes), protocol,
        !            84: and, optionally, the internal state of the protocol.
        !            85: .PP
        !            86: Address formats are of the form ``host.port'' or ``network.port''
        !            87: if a socket's address specifies a network but no specific host address.
        !            88: When known the host and network addresses are displayed symbolically
        !            89: according to the data bases
        !            90: .I /etc/hosts
        !            91: and
        !            92: .IR /etc/networks ,
        !            93: respectively.  If a symbolic name for an address is unknown, or if
        !            94: the 
        !            95: .B \-n
        !            96: option is specified, the address is printed in the Internet ``dot format'';
        !            97: refer to 
        !            98: .IR inet (3N)
        !            99: for more information regarding this format.
        !           100: Unspecified,
        !           101: or ``wildcard'', addresses and ports appear as ``*''.  
        !           102: .PP
        !           103: The interface display provides a table of cumulative
        !           104: statistics regarding packets transferred, errors, and collisions.
        !           105: The network address (currently Internet specific) of the interface
        !           106: and the maximum transmission unit (``mtu'') are also displayed.
        !           107: .PP
        !           108: The routing table display indicates the available routes and
        !           109: their status.  Each route consists of a destination host or network
        !           110: and a gateway to use in forwarding packets.  The flags field shows
        !           111: the state of the route (``U'' if ``up''), and whether the route
        !           112: is to a gateway (``G'').  Direct routes are created for each
        !           113: interface attached to the local host.  The refcnt field gives the
        !           114: current number of active uses of the route.  Connection oriented
        !           115: protocols normally hold on to a single route for the duration of
        !           116: a connection while connectionless protocols obtain a route then
        !           117: discard it.  The use field provides a count of the number of packets
        !           118: sent using that route.  The interface entry indicates the network
        !           119: interface utilized for the route.
        !           120: .PP
        !           121: When 
        !           122: .I netstat
        !           123: is invoked with an
        !           124: .I interval
        !           125: argument, it displays a running count of statistics related to
        !           126: network interfaces.  This display consists of a column summarizing
        !           127: information for all interfaces, and a column for the interface with
        !           128: the most traffic since the system was last rebooted.  The first
        !           129: line of each screen of information contains a summary since the
        !           130: system was last rebooted.  Subsequent lines of output show values
        !           131: accumulated over the preceding interval.
        !           132: .SH SEE ALSO
        !           133: iostat(1),
        !           134: vmstat(1),
        !           135: hosts(5),
        !           136: networks(5),
        !           137: protocols(5),
        !           138: services(5),
        !           139: trpt(8C)
        !           140: .SH BUGS
        !           141: The notion of errors is ill-defined.  Collisions mean
        !           142: something else for the IMP.

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