Alex Harris wrote:
> I am trying to search several hundred files for ip addresses.
> These are text files with a bunch of words and the ip addresses are
> interspered at random
> Here are examples:
> -----------file1-------------------
> machine 1 is 10.30.41.6 and machine b is 192.168.3.6
> machine c is 10.6.4.3 good to know machine 1 and b
> ------------------------------------
> -----------file2--------------------
> machine 4 is 10.30.41.7 and machine b is 192.168.3.9
> machine d is 10.6.4.3 and hates to know machine 1 and b
> machine 5 is 10.30.41.3 and machine b is 192.168.3.0
> --------------------------------------
>
> When I grep for the ip addresses the output is as follows:
> file1:10.30.41.6
> 192.168.3.6
> file1:10.6.4.3
> file2:10.30.41.7
> 192.168.3.9
> file2:10.6.4.3
> file2: 10.30.41.3
> Esentially grep will not put the filename in front of the second
> occurance of an ip on a line.
> I need a way to figure out how to have the filename be displayed on
> the lines it's currently missing.
>
> In case it helps, the current grep command is:
> egrep -Ho "[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}" *
Odd... My grep will preface each line with the filename when I give the
-H option as you have. Running your command on some random text files
gives the filenames also.
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