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Dave, The options to your tar command should have a space before the "-". . The line should read: gunzip -c gempak54upc_pl8.tar.gz | tar xvf - The tar command says to "x" extract in "v" verbose mode the "f" file name which follows...and "-" says that the file is standard input...which is the output from the gunzip command. Steve Chiswell Unidata User Support >From: Dave Levinson <address@hidden> >Organization: USDA-ARS NWRC >Keywords: 199901201708.KAA21623 >Dear Unidata Support: > >We have been trying to install nawips-5.4/gempakupc_pl8.tar.gz on our >SUN Ultra10 workstation, and have had a problem with getting the gunzip >and tar of this latest version to uncompress and un-tar! > >Steve Chiswell sent us a message with the instructions, but I guess we >didn't provide the workstation info to Unidata when we applied for the >license. In any case, I don't seem to be able to gunzip and tar at the >same time. We have the gunzip utility, and of course I've used tar many >many times. I don't know exactly what's wrong, but this is an an >example of what I try at the command line, and the message I get: > >blizzard{4} gunzip -c gempak54upc_pl8.tar.gz | tar xvf- >tar: tapefile must be specified with 'f' option >Usage: tar {txruc}[vfbFXhiBEelmopwnq[0-7]] [-k size] [tapefile] >[blocksize] [exclude-file] [-I include-file] files ... > >I would greatly appreciate any guidance on this problem that you might >have! > >Thanks, > >Dave. > >-- >Dr. David Levinson, Meteorologist >Northwest Watershed Research Center >USDA-Agricultural Research Service >800 Park Blvd., Plaza IV, Suite 105 >Boise, Idaho 83712 >Ph (208) 422-0724, Fax (208) 334-1502 > > >