srodawa@vela.acs.oakland.edu (Ron Srodawa) (01/22/91)
A week ago I mentioned I was exploring using PAX2.0 (tar.exe) to move large files between MSDOS and Xenix/386. Several asked for a report. Here goes. 1. PAX2.0 for MS-DOS is available from Simtel20 and several other archive sites. I got mine from wuarchive.wustl.edu which is a mirror of simtel20. There is a unix source supposedly on uunet.uu.net, but I haven't gotten that. 2. I wrote a small tar file (single 360k volume) on MSDOS and ported it to Xenix 2.3.2 (386). No problem. 3. I wrote a 6 volume (1440K per volume) on MSDOS and ported that to Xenix/386 2.3.2. Initial attempts did not succeed. Xenix tar would complain of a directory checksum error at the end of the first volume and never ask for succeeding volumes. Finally, I moved all six volumes to Xenix files using dd, then I built a single file with cat. Xenix tar accepted this with no problem. -- I don't know why Xenix fails to accept a multi-volume tar file. I plan to try to write one with Xenix just to be sure it can read its own. Obviously the data is correct, since constructing a single file with cat yields a tar file which can be processed. --- One solution would be to build PAX2.0 on Xenix and use that instead of Xenix tar. Presumably pax can read its own output. --- A second solution might be to tru gnu tar. That too should be able to be used both on Xenix and MSDOS. Ron. -- | Ronald J. Srodawa | Internet: srodawa@unix.secs.oakland.edu | | School of Engineering and CS | UUCP: srodawa@egrunix.UUCP | | Oakland University | Voice: (313) 370-2247 | | Rochester, Michigan 48309-4401 | |
davidsen@sixhub.UUCP (Wm E. Davidsen Jr) (01/23/91)
SOunds like you forgot the k option in tar. You can also use the bundle
package (multivolume to stdout) to read the stuff in and get better
performance, too.
a) tar xfk /dev/rfd1135ds18 1440
b) unbundle /dev/rfd1135ds18 1440k 18k | tar xf -
--
bill davidsen - davidsen@sixhub.uucp (uunet!crdgw1!sixhub!davidsen)
sysop *IX BBS and Public Access UNIX
moderator of comp.binaries.ibm.pc and 80386 mailing list
"Stupidity, like virtue, is its own reward" -mesrodawa@vela.acs.oakland.edu (Ron Srodawa) (01/25/91)
In article <2953@sixhub.UUCP> davidsen@sixhub.UUCP (bill davidsen) writes: >SOunds like you forgot the k option in tar. You can also use the bundle >package (multivolume to stdout) to read the stuff in and get better >performance, too. 1. I did not forget the k option. I think there is something else going on here. Reading the Gnu tar documentation, I get the impression it writes directories at the beginning of each volume of a multi-volume tar. I suspect that Xenix tar does something like this too. Obviously, pax does not. 2. I didn't know about unbundle. I'll have to look for it. Ron. -- | Ronald J. Srodawa | Internet: srodawa@unix.secs.oakland.edu | | School of Engineering and CS | UUCP: srodawa@egrunix.UUCP | | Oakland University | Voice: (313) 370-2247 | | Rochester, Michigan 48309-4401 | |