On Sun, Oct 16, 2005 at 11:47:18PM +0100, Adam Hardy wrote: > I've got a really simple backup script which goes like this: > > tar -rvf backup$1.tar java/projects > tar -rvf backup$1.tar .mozilla > tar -rvf backup$1.tar bin > echo "compress the whole thing .... " > tar -czvf backup$1.gz.tar backup$1.tar > > > Basically I am using -r (the append option) to backup some directories > and then I do a compress on the uncompressed file at the end. tar won't > let me append and compress at the same time. > > However a side-effect of this is in Windows - I transfer the backups > across to another machine running Windows - when I open the tar file in > winzip, I then see the uncompressed tar inside the compressed tar, so I > then have to open that too. > > Is there a better way to do this, avoiding the side effect with winzip? > > For instance, writing a list of files to a temp file and then piping it > all into tar in one go? Example commands of some such strategy would be > great! > Hi Adam, you can simply pipe the resulting .tar through gzip, like this: tar -rvf backup$1.tar java/projects tar -rvf backup$1.tar .mozilla tar -rvf backup$1.tar bin gzip backup$1.tar This will create backup$1.tar.gz - you could have achieved the same result by doing tar -czvf backup$1.tar.gz java/projects .mozilla bin because tar -z is doing nothing more than piping the resulting archive through gzip. HTH, Jan -- Jan C. Nordholz <jckn At gmx net>
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