I have some huge files that are produced daily from a production system written in basic (really). The files are fixed width records, 512 bytes, with newline field separators, newlines if the field is null, and trailing newlines for null fields. The data in the fields can be any ascii character.

I'd like to search particular fields for error numbers and print the key field plus the error fields or the entire line if there is a match. I'm using Gnuwin32 so I'm limited to awk, gawk, nawk, sed, grep, etc.

Thanks,

Victor