untaring a file .gz

Hello,


I am trying to untar a file called analog_2_11_tar.gz and I am getting the following message:

-rw-r--r--  1 absynthe  vuser  153401 Sep 10 00:30 analog2_11_tar.gz
absynthe: {5} % tar -xvf analog2_11_tar.gz
tar: Cannot identify format. Searching...
tar: Cpio file name length 65437 is out of range
tar: Invalid header, starting valid header search.
tar: Cpio file name length 35826 is out of range
tar: Cpio file name length 56434 is out of range
tar: Cpio file name length 33809 is out of range
tar: End of archive volume 1 reached
tar: bcpio vol 1, 0 files, 153401 bytes read.

ATTENTION! tar archive volume change required.
Ready for archive volume: 2
Input archive name or "." to quit tar.
Archive name >     

Can anybody tell me haow I should go about this problem?

Thanks

OS is Unix BSDI on NCSA 1.5                                  
mickaelAsked:
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jlmsConnect With a Mentor Commented:
Your filename " extension" (_tar.gz) suggest that the file was first tar'ed and then compressed using gzip.

To recover whatever is there you need to whet gunzip for your UNIX platform, then you can do:

gunzip analog_2_11_tar.gz
and then:
tar xvf analog_2_11_tar
will extract wathever is there.

I don't know the UNIX you are using, nevertheless using a search engine you should be able to find the source code and maybe the binaries for your UNIX. If there is no binary for your platform you can uncompress the file somewhere else (even WinZip 6.x for Windos95 recognizes gz files) and then transfer the analog_2_11_tar file and use tar to extract the contents.


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