Timothy J Massey wrote at about 17:40:43 -0500 on Thursday, February 9, 2012:
 > Bowie Bailey <Bowie_Bailey AT BUC DOT com> wrote on 02/09/2012 05:01:32 PM:
 > 
 > > On 2/9/2012 4:51 PM, Timothy J Massey wrote:
 > > > Hello!
 > > >
 > > > I've set up a new backup server, and for the first time I haven't
 > > > disabled compression.  BackupPC is now creating log files in (what it
 > > > is claiming is) .z format.  How do I read these?  I've tried zcat
 > > > ("not in gzip format"), uncompress (no error, but no file), and unzip
 > > > (end of central directory not found).  "file XferLog.0.z" says that
 > > > this file is "data" (which doesn't help...).
 > > >
 > > > So, how do I read these files, and even better:  how do I go back to
 > > > my plaintext logs?
 > > >
 > > > (I *knew* there were great reasons why I have always immediately
 > > > disable compresson on all of my backup servers!  :)  ) 
 > > 
 > > Backuppc uses a special compression format.  You can read it with the
 > > BackupPC_zcat program.  On my machine, it is located in
 > > /usr/local/BackupPC/bin.
 > 
 > I love BackupPC, but that is the *dumbest* thing *ever*.  (Sorry, Craig! 
 > :)  ).

Why? 

BackupPC compresses and pools the log files which is consistent with
the handling of all other files in the pc tree (except for the
'backups' info file). This keeps everything streamlined and
consistent.

Of course one could have made another design choice, but calling this
"the dumbest thing ever" is not very helpful nor intelligent.

 > And even if you for some reason thought that was a *brilliant* idea, why 
 > wouldn't you change the extension?  Would bpz be so hard?  :)

Because it uses zLib compression and I believe .Z is a common
extension for that. This is not the DOS/Windows world where you just
willy-nilly make up new 3 letter extensions for every program under
the sun.

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