On Sat, 2011-09-03 at 22:08 +0800, xinyou yan wrote: > 2011/9/3 Chris Tyler <chris@xxxxxxxxxxx>: > > On Sat, 2011-09-03 at 20:36 +0800, xinyou yan wrote: > >> I want to make sure one thing . > >> Can I use tar to pack the file created by dd. > >> I found use tar -rf xx.tar yyy.dd > >> can't make the file into the tar file . > > > > It depends on what is in the dd file and what you're trying to do. > > > > I assume that the dd file is a direct copy of a filesystem (for example, > > "dd if=/dev/sda2 of=yyy.dd" assuming that /dev/sda2 is a filesystem > > partition). > > > > If you simply want to reduce the size of the dd file, use gzip: > > gzip yyy.dd # produces yyy.dd.gz > > > > I want it be compressed by gzip, > and the gzip files to a archive file (such as tar file) > Howerver gzip file can't be add to a tar file (-r) > > > If you want to create a tar archive of the individual files within the > > dd image, you will have to mount the dd file first using the loopback > > option: > > mkdir /tmp/yyy > > mount -o loop yyy.dd /tmp/yyy > > cd /tmp > > tar cvf xx.tar yyy > > That's mean tar must taring a regular file or directory . > I wonder . why must tar the yyy (directory) > > you mean mount to a directory , and tar the directory ? > > > What I want 's just a archive file that contain some sigle dd files . > > thank you . > > You mail help me understand more > I am not sure what you want to do,, but if you have a gziped tar file and you want to add another file to it this should work: If your archive is archive.tgz Uncompress archive: gunzip archive.tgz Add a another file : tar -rf archive.tar second_file Compress the archive: gzip archive.tar This will recreate a new archive.gz file with the second file added. and so on. This procesws could be automates by a bash script. -- ======================================================================= Reality always seems harsher in the early morning. ======================================================================= Aaron Konstam telephone: (210) 656-0355 e-mail: akonstam@xxxxxxxxxxxxx -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
