2011/9/4 Aaron Konstam <akonstam@xxxxxxxxxxxxx>: > 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 Yes it can achieve my work, However , I just can't undestand , tar -rf xx.tar yyy.dd to a regular file tar ( can 't add the size) And When i tar -xf xx.tar. It will give a error message : tar: Unexpected EOF in archive > This will recreate a new archive.gz file with the second file added. By the way ,it will take many times to do it. > 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 > -- ---------------------------------------------------------------- 嘉谟之行 "昔我往矣，杨柳依依 ； 今我来思 ，雨雪霏霏" ---------------------------------------------------------------- -- 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
