I would like to take a file that is comma delimited, read it, and in the first column, change every 7 into a 4. I think there are a few ways to skin this cat, looking for the best way, Any ideas?
A brief view of what the file looks like:
1,10002,0,11:18,11:18,0,1,444,1
4,1.5
5,1.5
6,0,444,444,10002
7,0,1.5
1,10003,0,11:34,11:34,0,1,444,1
4,1.5
5,1.5
6,0,444,444,10003
7,0,1.5
1,10004,0,11:39,11:39,0,1,444,1
4,7.25
5,7.25
6,0,444,444,10004
7,0,7.25