in reply to scraping temperatures

net snmp looks confusing I am not sure how to use that, for the time being as this is a necessity to do quick, I was going to try scraping the page periodically,I have a piece that downloads the page, and one that sends an email so now I need a regex that will find the temperature and send a message if its too high. the temperature is like this in the page.. 66.1 °F how would I do a regex for this? would something like this work? 
my $temp=~/dd*&degF/
if $temp>="75&degF" 
send a message code here..

[download]

Replies are listed 'Best First'.
Re^2: scraping temperatures
by molecules (Monk) on Feb 10, 2010 at 22:17 UTC
    How about the following? The variable $text should contain the text you want to check. 
    if(
 $text =~ 
  m{ 
     (         #open capturing parenthesis
         \d+   #numbers before the period
         \.    #literal period
         \d+   #numbers after period
     )         #closing capturing parenthesis
     \s*       #optional spaces
     °     #degree symbol
     F         #literal letter F
  }xms){
     my $temp = $1;   # '$1' is what was found in capturing ()
     if($temp > 75){
         #code to send message
     }
}else{
    #code to deal with not finding temperature data.
}

    [download]
    or without comments 
    if( $text =~ m{ (\d+ \. \d+) \s* ° F }xms){
     my $temp = $1;
     if($temp > 75){
         #code to send message
     }
}else{
    #code to deal with not finding temperature data.
}

    [download]
    Note: Updated several times
[reply]
[d/l]
[select]
      Thanks molecules! I found the error(s)I had its working now.
[reply]
[reply]

In Section Seekers of Perl Wisdom