This is a cool utility, I've got it to do a diff using:
sfk165.exe list -sincechg "Path1" "Path2"
I would like to get it to ignore differences that are blank lines or white space, is this possible?
This is not possible. As soon as one byte of content is different, sfk treats files as different.
Comparison without whitespaces requires an external diff tool, for example winmerge.