HOW TO INSTALL IN MULINUX
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Install a X.gz new command 
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  # gzip -dc X.gz > /usr/bin/X

  # chmod +x /usr/bin/X

Explore a X.tgz archives
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  # cp X.tgz /tmp; cd /tmp
  # gzip -dc X.tgz | tar -xf-

and copy what you need in suitable place, by hand.

Install a patch for muLinux tree
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  # gzip -dc X.tgz | ( cd /; tar -xvf-)

-M.A.