MKS's product FileCompare does exactly that.
Contact me privately if you would like some information sent to you.
p.s. I do work for MKS ... but I'm a gearhead :)
> -----Original Message-----
> From: John Hall [mailto:firstname.lastname@example.org]
> Sent: Thursday, September 09, 1999 12:18 PM
> To: MIDRANGE-L@midrange.com
> Subject: Compare Files/Records
> I need to compare about 500 files with 500 other files to see if any
> records in the files are different and which fields have changed. All
> the files are externally described. This is going to be used
> as part of
> a software validation test for some conversions we are doing. i.e.
> convert the data-run the new software in parallel with the old
> software. Then convert the data to another library and the
> files should
> be identical. Something like CMPREC OLDFILE(TESTLIB1/FILE1)
> Obviously I would prefer to have the computer do all the work :)