i have a large text file which is the output of a large sql join selecting all cols of two tables a and b. It is in the form acol1, bcol1, acol2, bcol2 etc ... acol100, bcol100 .. Almost all cols are same i.e acol1=bcol1 etc.. except one or two that are different and it is difficult and error prone to identify them in excel or txt file. I am looking for a script that will identify the cols that are different in each line (result row) and print it. ie. if acol40 and bcol40 and acol56 and bcol56 are different, print them. these are text cols. therefore they are separated by commas and enclosed in ". Thanks in advance.