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Unzipping and detarring a file, again

Gnustome asked
Last Modified: 2013-12-15
I am trying to unzip and detar a file, fileback.tgz, by typing gzip -dc fileback.tgz | tar -xvf.  The system (Debian 2.4.18) returns a reply: tar: option requires an argument -- f.  I have also tried to unzip the file first, with the intention of detarring the result.  When I do this, text flies by on the monitor for about 15 seconds, but the file name is unchanged.  I don't know what I'm doing wrong or what to do.  Your help will be appreciated.
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