HI：
How can i use use gzip to compress and tar to append the other file:
here is is a testcase :
file :test1 test2
:~/testtar # tar -czf 1.tar.gz test1
:~/testtar # tar -rzf 1.tar.gz test2
tar: Cannot update compressed archives
Try `tar --help' or `tar --usage' for more information.
However tar -cf
tar -rf can work fine.
I am thinking find a way useing gzip to compress and tar then and
need to append any time .
Thank you
2011/8/31 j.e.aneiros <jesus.aneiros@xxxxxxxxx>:
> Hi,
> gzip is a compressor, not an archiver as tar. zip is an archiver and
> compressor. So maybe you could use tar with the z option to compress?
>
> Best regards, --janeiros.
> On Tue, Aug 30, 2011 at 12:57 PM, xinyou yan <yxy.716@xxxxxxxxx> wrote:
>>
>> Hi every one ,
>>
>> I was confuse to use gzip in shell.
>> You see below. I can use zip -gj make test.tar include the
>> testfile and the test1file
>> However , use gzip make the test_gzip.tar.gz NULL.
>> I see man and use gzip -c file >> tarname. to add a file to a tar file
>> .
>> Can anyone tell me why?
>> You can let /root have two sample file testfile test1file
>>
>>
>> #!/bin/sh
>>
>> anse='/root/test.tar'
>> anse_gzip='/root/test_gzip.tar.gz'
>> test='/usr/local/sbin/testfile'
>> test1='/usr/local/sbin/test1file'
>>
>> zip -gj $anse $test
>> zip -gj $anse $test1
>>
>> gzip -c $test >> $anse_gzip
>> gzip -c $test1 >> $anse_gzip
>>
>> I think gzip can do what zip can do in linux .
>>
>> If I just do
>> gzip -c testfile >> test_gzip.tar.gz
>>
>> It can create the test_gzip.tar.gz file But can't include any file .
>>
>>
>>
>> --
>> ----------------------------------------------------------------
>> 嘉谟之行
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>
>
> --
> J. E. Aneiros
> GNU/Linux User #190716 en http://counter.li.org
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