Re: bash script for iptables

From: William Park (opengeometry_at_yahoo.ca)
Date: 07/26/04

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    Date: 26 Jul 2004 20:07:17 GMT

    Felix Tilley <ftilley@localhost.localdomain> wrote:
    > !/bin/bash
    > # 10 JUN 2004
    >
    > # Must be run as root
    >
    > grep "localhost kernel" /var/log/syslog|grep PROTO|while read a1 a2 a3
    > a4 a5 \ a6 a7 a8 a9 a10 a11 a12 a13 a14 a15 a16 a17 a18 a19 a20
    >
    > do
    > if test $a16 = "PROTO=UDP"
    > then echo $a1 $a2 $a3 "-0700" $a9 $a10 $a16 $a17 $a18
    > else echo $a1 $a2 $a3 "-0700" $a9 $a10 $a17 $a18 $a19
    > fi
    > done

    More sensible way of doing this kind of thing is
        grep ... | sed ... | while read line; do
            ( declare $line # 'line' only has VAR=VALUE or VAR strings
              if [ $PROTO = UDP ]; then
                  echo ...
              else
                  echo ...
              fi )
        done 

    -- 
William Park, Open Geometry Consulting, <opengeometry@yahoo.ca>
Toronto, Ontario, Canada
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