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Process a compressed file

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# 1  
Old 04-15-2010
Process a compressed file
Hi

i have a filename.tar.bz2 and i have to parse it with a tool that doesn't support compressed files.
I have to do it for many big files, so i can't decompress and then process. I'd like to do something like:
Code:
tar -jxvf namefile.tar.bz2 | parsing_tool

i mean analyze it directly, without wasting space for decompress it.
Any idea?

Thanks in advance
D.
# 2  
Old 04-15-2010
try using zcat command
# 3  
Old 04-15-2010
Hi

thx for reply,
the zcat seems like not working, i get the message that it's not a "not in gzip format".
I was checking this way, but there's something wrong:

Code:
bzcat namefile.tar.bz2 | tar -xvf - | parsing_tool

what you think?

---------- Post updated at 05:17 PM ---------- Previous update was at 04:48 PM ----------

Hi

a friend suggest me the way. I post it:

Code:
bzcat namefile.tar.bz2 | tar -xOf - | parsing_tool

# 4  
Old 04-15-2010
tar supports compressed files by itself, no need to pipe bzcat through it.

Code:
tar -jxOf namefile.tar.bz2 | parsing_tool

Also note you can specify the filename you wish to extract from the tape archive with

Code:
tar -jxOf namefile.tar.bz2 filename | parsing_tool

# 5  
Old 04-19-2010
Great!

thx for reply

D.
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