Gzip decompress a file error.

[ckchai]

Hi,

I'm ftp some file from a windows system to Hp-Unix 11.00.

I used the Binary mode.

After the file transfered to HP-Unix system, I do a uncompressed. But I have error doing this.

command and error message on screen :-

fme6:/users/mpeda/INOTFE> cd data
fme6:/users/mpeda/INOTFE/data> ll
total 2830
-rw-r----- 1 mpeda users 277498 Mar 13 11:15 CP_AC548110.00_01_2_200602090339.gz
-rw-r----- 1 mpeda users 1171398 Mar 13 09:32 RD_AC550207.00_25_1_200602261338.gz
fme6:/users/mpeda/INOTFE/data> gzip -d CP_AC548110.00_01_2_200602090339.gz
incomplete distance tree

gzip: CP_AC548110.00_01_2_200602090339.gz: invalid compressed data--format violated
fme6:/users/mpeda/INOTFE/data> mv CP_AC548110.00_01_2_200602090339.gz cp.gz
fme6:/users/mpeda/INOTFE/data> ll
total 2830
-rw-r----- 1 mpeda users 1171398 Mar 13 09:32 RD_AC550207.00_25_1_200602261338.gz
-rw-r----- 1 mpeda users 277498 Mar 13 11:15 cp.gz
fme6:/users/mpeda/INOTFE/data> gzip -d cp.gz
incomplete distance tree

gzip: cp.gz: invalid compressed data--format violated
fme6:/users/mpeda/INOTFE/data> ll
total 4944

[Arunvijai_4]

Hello,

After you do the transfer, make sure the "cksum" command gives the similat output on both servers.

-Arun

[Muthukumar_5]

Try to transfer the file again. May be a problem with transfer.

Another way is try to the same step in server side. Is it working?

--
Muthu

[Senthil Kumar .A_1]

Hi,

I don't you get a different result with "gunzip" command. Still have you tried the following.

#gunzip cp.gz


Regards,
Senthil Kumar .A

[ckchai]

Hi,
I cannot do cksum on the Windows server.

Anyway I did try "gunzip" command.

I'm getting the same error message.

It is because of the *.gz files already have problem when FTP to the UNIX server?

regards,
ck chai

[Senthil Kumar .A_1]

Hi,

Are you able to decompress those files in windows box, using "winzip" application.

Regards,
Senthil Kumar .A

[Arunvijai_4]

Hello,

I hope you have downloaded .gz files on Windows and trying to transfer. First of all, check you can open the file in windows without any error. You can try to open with Winzip or Winrar.

I suspect, your download is corrupt.

-Arun

[Muthukumar_5]

Try to transfer files or directories without .gz format. (As whole directory to hp-ux) if it is urgent.

Or try to transfer the same file to other platform like linux and check it.

--
Muthu

[ckchai]

I'm trying to open the *.gz file on the Windows server.

I have an error :-

Invalid compressed data - Unable to inflate.


I'm investigating the problem on the source server that transfer the files to my Hp-unix server.

Thanks.

[Arunvijai_4]

Hello,

Invalid compressed data - Unable to inflate.

This means that the file is corrupted. You need to re-download it again.

-Arun

[Yogeeraj_1]

hi,

make sure again that you have transferred the file in binary mode.

you may also user unzip for compression and decompression in case this does not work

hope this helps!

kind regards
yogeeraj

[Muthukumar_5]

The problem is with the .gz file. try to download it again.

However, google search with "Invalid compressed data - Unable to inflate" says that problem is with winzip or winrar too :(

--
Muthu

[Senthil Kumar .A_1]

Hi,

I was able to open *.gz files in the past with the "winzip" app without any errors. If it shoots out error it means, either there was a download problem or download format was wrong. Make sure when you are downloading it from ftp server, *.gz is downloaded in bin format. Test it using "winzip" and then trasfer it to the uniz box where you want it to be inflated.

regards,
Senthil Kumar .A

[Peter Godron]

Hi,
I believe the problem is a corrupt gz file.

Please recreate the gz file on your windows box, then ftp binary format and unzip on hpux box.

This is suggested by the fact that you can not unzip the original gz file on the original windows box.

[Kent Ostby]

If you are using FTP to transfer the file, make sure you are in binary mode.

To turn binary mode on, type "bin" at the FTP prompt after the connection is made.

Make sure the sizes match on the two systems and/or the intermediate system ifyou have one.

If you aren't using FTP, please post the commands you are using.

[Peter Godron]

Hi,
any luck with my suggestion to re-creating the zip file on Windows and trying to unzip it on the hp platform?

[Liudvikas Bukys]

Sorry, this repeats the most-likely possibilities that others are suggesting also:

1. Most likely is an FTP without BINARY mode. You already ruled that out.

2. Is it possible that the Windows file is not a .gz but a .zip? In that case you'd need to use a free unzip program and not gunzip. They are similar but not the same.

3. Other errors such as disk-full or other file corruption would explain it too. In which case the answers is to re-transmit or re-create at its origin.

If this is critical data for which you have no other source, partial or full recovery is quite difficult but not impossible. Post a reply if that is the unfortunate situation you are in and I'll make suggestions.

[ckchai]

Problem solved.
It is the source files corrupted.

I just need to resent the files.

Thanks.