fatalaccidents 0 Newbie Poster

Hey guys,

So I have a file with a bunch of information with the first line being the julian date. I'm wanting to copy all of the information of the julian date (which there are 288 lines per julian date from readings every fifteen minutes) and copy them and add them to the end of the file. I'm then wanting to take the pasted data and change the julian date to julian data + 1. It would be nice if the script could take an argument as to how many times to repeat the day. I'm really lost, and I'm pretty new. I imagine awk scripting would be the best bet because we're dealing with columns here. Can anyone help?

Thanks in advance and for reading.
Matthew