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On Wed, Mar 05, 2008 at 02:58:52PM +0000, Tony Sumner wrote:
> On Mar 05, 2008, Henry Bremridge was like:
>
> > 4. Compress backed up files
> >
> > $bzip2 backed_up_files.tar
>
> I have heard it said that it is better to compress the files separately
> (because if there is an error in a bz2 file you lose everything). What
> do you think?
>
Short answer: No idea :D
Long answer:
1. Creating the tar file is very quick
2. Compressing the file takes ages on my machine
3. I do not know how the command "tar -cjf" works: whether
- the complete tar file is created and then compressed
- the compressed tar file is created file by file
hence for me, I create the tar file first. At least then I have a backup.
Compression can take place later: normally as these are just backups, I encrypt them
to myself. Then I feel that if need be I can simply throw away old CDs as the data
is of no use to anyone
--
Henry
Wed Mar 5 15:16:32 GMT 2008
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