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Full Discussion: Netstat -i notification
Operating Systems Linux Netstat -i notification Post 302703847 by Corona688 on Thursday 20th of September 2012 12:25:55 PM
Old 09-20-2012
You've got some useless use of cat in there.

I wouldn't bother processing the logfile except when you use it. You can do so in one step.

I might do this:

Code:
netstat -us > newlogfile

[ -f oldlogfile ] && awk '(NR==FNR) && $6 { A[$1]=$6; next } # Store old log file errors in array A
        $1 in A { print $1, $6-A[$1] } # If the interface is found in A, print interface-name, difference of errors
        ' oldlogfile newlogfile

mv newlogfile oldlogfile # Replace logfile

Last edited by Corona688; 09-20-2012 at 01:36 PM..
 

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LEARN ABOUT BSD

slattach

SLATTACH(8)						      System Manager's Manual						       SLATTACH(8)

NAME

       slattach - attach serial lines as network interfaces

SYOPNSIS

       slattach ttyname [ baudrate ]

DESCRIPTION

       Slattach  is  used  to  assign  a  tty line to a network interface, and to define the network source and destination addresses. The ttyname
       parameter is a string of the form ``ttyXX'', or ``/dev/ttyXX''.	The optional baudrate parameter is used to set the speed  of  the  connec-
       tion. If not specified, the default of 9600 is used.

       Only the super-user may attach a network interface.

       To  detach  the	interface,  use `ifconfig interface-name down' after killing off the slattach process.	interface-name is the name that is
       shown by netstat(1)

EXAMPLES

	       slattach ttyh8
	       slattach /dev/tty01 4800

DIAGNOSTICS

       Messages indicating the specified interface does not exit, the requested address is unknown, the user is not privileged and tried to  alter
       an interface's configuration.

SEE ALSO

       rc(8), intro(4), netstat(1), ifconfig(8)

4.3 Berkeley Distribution					 November 17, 1996						       SLATTACH(8)
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