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I've sometimes heard it's "catenate" not "concatenate". Do they mean the same thing? As for cat, the utility, I'm afraid we'll never stop seeing people doing cat file|prog1|prog2 e…

an alternative approach echo images/*.jpg|sed 's/.*/convert -geometry 200x \"&\" \"&_thumb.jpg\"/;s/\.jpg_thumb/_thumb/' > script; sh -v script 2>log you could also use -x instead …