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Number   :  3293
Date     :  2002-12-13
Author   :  Kan Yabumoto
Subject  :  Re: Trying to use /RX
Size(KB) :  3



Tait:

I notice that the first XXCOPY command with the /RX switch,
you may want to add /S/H/R.


The /S switch is to make sure the files in subdirectories whose
counterpart in the source directory is no longer present.
Similarly, /H is necessary to handle hidden files (the /CLONE
operation include hidden/system files and therefore, it is
expected that the backup directory may contain such files).
For the same reason, /R should be there. Again, /CLONE operation
may save a read-only file into the destination and by the virtue
of /KS switch in the /CLONE switch-set, such a read-only file
will be saved in the backup directory as a read-only file.
Therefore, when you try to purge a read-only file in the /RX
operation, such a read-only file will resist being deleted.
That is what /R switch is for. I'm pretty sure that in typical
user-environment like that, most files do not have exotic
file attributes like hidden/system or read-only. But, adding
/H/R will make it more bullet proof. Oh, yes, one way or
another, /S should definitely be there.

I suppose your remark about the subdirectory was for the
first xxcopy command (/RX). The second one (/CLONE)
should handle subdirectories because /CLONE has /E in it
which is a glorified /S (go down to subdirectories) where
even empty directories will be copied.

BTW, I do not own a Palm gadget, and you are the first person
who talked about using XXCOPY for backing up Palm files.
But, I gather the F:\Palm\ directory is not really on your
Palm machine but rather a result of a preliminary step which
synchronizes the files inside the Palm machine to the F:\Palm
directory on your desktop machine. Still, I'm quite curious
as to what kind of flavor that Palm-originated files bring in.
That is, I have a few questions with regard to the Palm file system.

1. what is the legal character set for the Palm system?
2. does it allow a space character in a filename?
3. what is the longest filename length?
4. if some characters in Windows filename (some crazy character
such as , ; ( ) { } ! @ !, etc.) are not permitted in the
Palm file system, what kind of filename-conversion does
the sync utility perform?

Anyway, being a file system designer (I once designed the DATMAN
file system for tape-based volume --- see www.datman.com),
I'm very interested in the Palm system, yet I don't have
compelling reason to buy it just to find these things out.

Kan Yabumoto
============================================================


At 2002-12-12 22:15, you wrote:
>Hello everyone. Here is the script I am using in my batch file:
>
>Del RemoveLog.txt
>Del BackupLog.txt
>xxcopy.exe "f:\Palm\KjellbT\" "C:\Palm\KjellbT\" /RX /YY /OA"RemoveLog
>.txt"
>xxcopy.exe "f:\Palm\KjellbT\" "C:\Palm\KjellbT\" /CLONE /FF /YY /OA"Ba
>ckupLog.txt"
>
>It does not appear to be going down the subdirectories. Actually, I
>know it is not. What am I doing wrong here. I am trying to initially
>remove any files that do not exist on the src, then run the backup.
>
>Thanks!
>
>Tait



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