Regarding rli2.exe
#1
It seems that rli2.exe only compares the 'bigger' file against the smaller one. Meaning that we can't find unique lines in a rather small file comparing to an existing very big file.

A rather ugly solution would be to :
1.merge both files to one file
2.sort the merged file unique
3.sort the original big file
3.compare merged file against the big file using rli2.exe

My question : Is there a more elegant option to get the unique difference  from a file.

Tried awk, but was short in memory (strerror).

Thank you for helping out here

tibit
#2
dude, just flip the arguments around...
#3
Thank you for replying even silly questions .... shame on me .... thanks to you!

tibit