Re: [Gnu-arch-users] Free space wasting when handling binary files

[Adrian Irving-Beer]

On Thu, Mar 24, 2005 at 12:42:46PM -0600, John Arbash Meinel wrote:

> Remember, the tarball is compressed, so you do get a little bit of delta
> compression even though there are 2 copies in there.

Negative on that, AFAICT...

% dd if=/dev/urandom of=file1 bs=1k count=1k
1024+0 records in
1024+0 records out
1048576 bytes transferred in 0.338545 seconds (3097302 bytes/sec)
% cp file1 file2
% ls -l file1 file2
-rw-r--r--  1 wisq wisq 1048576 2005-03-24 18:50 file1
-rw-r--r--  1 wisq wisq 1048576 2005-03-24 18:51 file2
% tar -zcf files.tar.gz file1 file2
% ls -l files.tar.gz
-rw-r--r--  1 wisq wisq 2097810 2005-03-24 18:51 files.tar.gz

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