gunzip error

spangler · 10-09-2007, 09:24 AM

I continue to get this error while trying to unzip a file:

gunzip: blacklists.tar.gz: not in gzip format

Could anyone tell me what other method I should use to unzip this file.

Thank you

dafunks · 10-09-2007, 09:40 AM

Try:

tar xvf blacklists.tar.gz

student04 · 10-09-2007, 04:12 PM

Quote:

Originally Posted by dafunks

Try:

tar xvf blacklists.tar.gz

That will work for files ending in .tar; you are missing the 'z' flag:

Code:

tar xvzf blacklists.tar.gz

will decompress it and extract the contents from the tarball.

To just decompress it, do:

Code:

gunzip blacklists.tar.gz

which will produce blacklists.tar

And just in case you're curious, to recompress the tarball:

Code:

gzip blacklists.tar

Flags of tar:

x - extract
z - use gunzip compression (*.gz or *.Z)
j - use bzip compression (*.bz2)
f - next argument is the file to process
v - verbose output

If you use gunzip to try and decompress the .tar.gz file and it complains that it is not in gzip format, then maybe the file is not a gz file even though it has that extension.

Try

Code:

file blacklists.tar.gz

See if that tells you if it is a gzipped file.

dafunks · 10-09-2007, 06:00 PM

tar xvf does the job fine

Screenshot, or it never happened? lol
http://dark-irc.net/dafz/tarxvf.png

student04 · 10-09-2007, 11:41 PM

Ok so I was wrong about omitting the 'z' flag...

Maybe the file is corrupted?

dafunks · 10-10-2007, 01:41 AM

He might not have been typing the proper gunzip syntax. He only showed the output, not the input. So it is really hard to tell where he was going wrong, but yeah, every chance there was something wrong with the zipped file.

chrism01 · 10-10-2007, 07:29 AM

Woudln't be the first time i've seen a file called file.tar.gz (or file.tgz) and it turned out not to be gzipped....

spangler · 10-11-2007, 08:06 AM

I tried the tar -xvf. That did not work. I got the error
blacklists/
blacklists/CATEGORIES
blacklists/ads/
blacklists/ads/domains

gzip: stdin: unexpected end of file
blacklists/ads/urls
tar: Unexpected EOF in archive
tar: Unexpected EOF in archive
tar: Error is not recoverable: exiting now
tar: blacklists.tar: Cannot open: No such file or directory
tar: Error is not recoverable: exiting now
ERROR: unable to extract new lists,
aborting blacklist refresh.

I will now try the tar -zxvf and see if that works.

This is what the command is as it sits now:
# Untaring Blacklist archive.
tar -zxvf blacklists.tar.gz
# gunzip blacklists.tar.gz
tar -xf blacklists.tar
The commented out gunzip was the original command.

Thank you all for your help.

dafunks · 10-11-2007, 09:34 AM

Weird, did it extract everything in "blacklists/ads/urls"?

Oh well, you got what you needed, thats what counts

spangler · 10-15-2007, 12:31 PM

Using the tar -zxvf worked. It is now unzipping the file.

Thank you all for your help.