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Full Discussion: tar'ing and zipping files
Top Forums UNIX for Dummies Questions & Answers tar'ing and zipping files Post 302072411 by amro1 on Tuesday 2nd of May 2006 03:09:01 PM
Old 05-02-2006
here ...

tar by the name is "tape archive" so it assumes, if "-f" option wasn't provided it tries to put file on the tape drive: /dev/rmt is a acronym of tape drive in UNIX.

So you give it "-f" option and a file name to redirect archive to file and not to tape.

Today's tar is quite improved so there's no need to use compression as a separate program. Just add "z", like "tar -cvzf". Some versions of tars take the list of parameters without "-" but normally it is required. Get "UNIX Essentials and UNIX Core" DVD or "UNIX in 24 hours" as they teach all this stuff.

Hope it helps.
 

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tcopy(1)							   User Commands							  tcopy(1)

NAME
tcopy - copy a magnetic tape SYNOPSIS
tcopy source [destination] DESCRIPTION
The tcopy utility copies the magnetic tape mounted on the tape drive specified by the source argument. The only assumption made about the contents of a tape is that there are two tape marks at the end. When only a source drive is specified, tcopy scans the tape, and displays information about the sizes of records and tape files. If a des- tination is specified, tcopy makes a copies the source tape onto the destination tape, with blocking preserved. As it copies, tcopy pro- duces the same output as it does when only scanning a tape. The tcopy utility requires the use of Berkeley-compatible device names. For example, example% tcopy /dev/rmt/1b /dev/rmt/2b ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWesu | +-----------------------------+-----------------------------+ SEE ALSO
mt(1), ioctl(2), attributes(5) NOTES
tcopy will only run on systems supporting an associated set of ioctl(2) requests. SunOS 5.11 10 Mar 2000 tcopy(1)
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