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Ed, > Have you ever heard of nccatm? Do you know anything about it? Yes, it was developed at GFDL. I have an email from John Sheldon at GFDL from June, 1997, that includes this excerpt: > Basically, he concatenated 2 files, each ~1.2GB, on our Cray T90 using > "nccatm", a local extension (for multiple files) of Chuck Denham's > "nccat" program. ... So if you want the source for nccatm, you'll have to contact GFDL. --Russ