I don't fully understand your question, but I first notice that your program as it is written, should not find any matching line in your log. The reason is that you are using 

if($_ == "has gone down" ) { ... }

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to check for the interesting lines. $_ certainly will never be exactly the string has gone down, because at least it will have a \n at the end, plus, according your description, it has some more information in this line (such as the timestamp).

If you are only interested in lines containing that magin string, the easiest way would be to use index. Note that index returns -1 on failure.

If you need, however, some of the other fields in the logline as well, in order to run your start server command, you are better of using regular expressions. For example if you need the server name and port, you could write something like 

if(/Server\s(.+):(\d+) has gone down/) {
  my $server=$1;
  my $port=$2;
  ...
}

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-- 
Ronald Fischer <ynnor@mm.st>

In reply to Re: creating a perl script by rovf
in thread creating a perl script by scott_apc

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