First, thank you to both responders. Next, I really goofed. I forgot that gunzip normally removes the .gz file when it runs so what I had in place of the .gz file was
InstallingGRFromSource#Using-the-build-gnuradio-script without the extension. I didn't even miss it when I did rm -i * so I was thinking nothing had happened. Some days, some of us are just absentminded. I always feel really bad if that causes other people to waste their time. The file name actually needed no specialtreatment at all and gunzip just worked. Again, thank you. Martin