Hello Bill,

Monday, July 14, 2003, Bill McCarthy wrote:

>> 7za u -ms=off x:\TBArchives\tbMail7z.7z -up0q0r2x1y2z1w2
>> "AppsBase\MAIL\*" -r

> Why use 7za?  From the manual, "7zn.exe and 7zan.exe are optimized
> versions of 7z.exe and 7za.exe for execution on Windows NT/2000/XP."
> Aren't you running XP?

Yes. I had numerous problems initially with the switches. The problem I
had was I didn't use the "ms=off" switch which is necessary with the
"7z" format for better compression. When I got it to work it was with
the 7za. I decide not to use 7zn or 7zan because according to help
'7za.exe is a standalone version of 7-Zip. 7za.exe supports only 7z,
zip, gzip, bzip2 and tar formats. 7za.exe doesn't use other modules."
When I had no problems with 7za and was backing up over 500 MB of data
in approximately a minute give or take a few seconds without ever
putting it on the clock, I figured keep the other modules out of the
processing because I was satisfied with the results.

Did you try "7zn.exe" or 7zan.exe"? I suppose I could, but my test were
successful on the restores, so why fix something that isn't broke.

> Also, why the -u?  All are set to the defaults except you ignore your
> p's and q's :-)

According to the help topic "-u (Update options) switch" see the default
for "Update" command. I wanted to address the possibilities with the
INTENT of keeping my backup the same as what I had on disk.

Update default: p1q1r2x1y2z1w2

Update my set:-up0q0r2x1y2z1w2

I'm using a wildcard so the differences are as follows:

  file in archive not matched with wildcard (p) - default copy file from old archive 
to new
                                                - mine doesn't copy file to new archive

  file in archive is not on disk (q) - default copy file from old archive to new
                                     - mine doesn't copy file to new archive

Since every file is look at because I use a wildcard to capture all
files based upon directory, I probably could have left the "p" state the
default without any different results. The default for "q" would have
left a file in the new archive that was NOT on the disk which would not
have matched my intent. I went through all the states and default
actions to make sure I got what I intended, so I set them all.

> The default setting of p1q1 does the same thing when a new '!' archive
> isn't specified - doesn't it?

Yes the way I understand it. I specified a new name for the archive and
was successful using the "Zip" format, but it just made for more work
because I wanted one set of files.

I wanted to use the "7z" format because of better file compression. I
couldn't get it to work until I was informed about the "ms=off" switch.
When I tested it I did so without a new '!' archive. It may or may not
work, give it a try. Remember this is a Beta.  :-)

-- 
Best regards,

Greg Strong                     
TB! v1.63 Beta/11 on Windows XP Service Pack 1


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