Much better. As far as the threshold goes, I thought about awk for combining the two columns into a one column list and then using sort. After that, I'd use grep to check for value points of e-04 and greater. (i.e. M class flares and better) Then using the returned highest value to re-grep the original file to retrieve the date, time, etc.... If the threshold is hit, awk the date/time/flare class into an alert registry (text) file so if the system crashes, upon reboot, the recipients won't get a flood of alerts re-issued. Also, I'll have to figure out how to handle values greater than 10^3 (or ^2 I think) since they're logged as a decimal value instead of an exponent. This might actually have to be done with 5 (or so) grep operations with a check on the alert file for values exceeding the previous alert, but I have quite a bit of time before the next solar max to get this done which should be about 2012. Yeah, plenty of time
Again, thx for not only the help, but with increasing my understanding of sed. I've studied it for a while but this really helps my understanding. I'm sure you've heard it before, but I didn't know you could do that with sed.