How can I write a tar file in UniTree to tape without untarring the file on disk?
In UniTree, issue the commands: ftp> binary ftp> get tarFile.tar “|dd of=/dev/rst0 obs=65536” The command above assumes there is a tape drive connected to your local workstation and that tape drive is connected to /dev/rst0. The file tarFile.tar will be piped into the unix utility “dd” (dd reads from stdin by default). Obs sets the block size to 64K, which is appropriate if you want to dump the tar file to exabyte tape. To read the tape, simply use tar. A side benefit to this method is that it doesn’t consume any local disk space. If local disk space isn’t a problem, ftp the file to a local workstation and then use ‘dd’ to move the file to tape.
