topic cpio in Operating System - HP-UX

cpio

Prathap_1 — Fri, 01 Mar 2002 18:58:43 GMT

Hi
Can anyone give me the cpio command syntax to read and extract the contents from tape.

Thanks
Prathap.

Re: cpio

melvyn burnard — Fri, 01 Mar 2002 19:02:10 GMT

You would need to know most of the options used to create the tape if it is cpio.
You may want to look at using pax to read it.
man pax

Re: cpio

S.K. Chan — Fri, 01 Mar 2002 19:08:57 GMT

Some example that you may give it a shot... (remember cpio is very particular with what options you used)
# cpio -ictv < /dev/rmt/1m
==>verify what is on the tape
# cpio -iudmcx < /dev/rmt/1m
==>restore all files on tape
# cpio -icvdxumB < /dev/rmt/1m
==>restore one file

Re: cpio

A. Clay Stephenson — Fri, 01 Mar 2002 19:17:51 GMT

Hi:

You need to repeat all those combinations but also leave off the 'c' option. 'c' means ASCII header format; no 'c' means binary header data. There's jusy no way to know and you may have to send the data through dd if the data was reblocked.

I would start with these:

cpio -icBvt < /dev/rmt/0m
cpio -iBvt < /dev/rmt/0m
cpio -icvt < /dev/rmt/0m
cpio -ivt < /dev/rmt/0m

Those are all safe and one of them should at least give you a partial listing. If you get a partial listing, you know that you next need to fight the blocking factor.