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- xScan V1.2 - Manual
-
-
- NAME
- C:xScan
-
- SYNOPSIS
- xScan FILE/M/A,ALL/S,REMOVE/S
-
- DESCRIPTION
- xScan is a small CLI command which scans through XFH partition and
- modifies them. After those modifications XFH (V1.34 or newer) will be
- able to read directories MUCH faster. In fact you'll no more notice
- a speed difference between XFH and the normal FileSystem.
-
- VERY IMPORTANT:
- xScan will NOT work if you use it directly on a XFH partition, it'll
- just do nothing. Instead of that you must use it on the PHYSICAL
- directory of the XFH partition. E.g. if your XFH partition is called
- "XH0:" and the rootdir of is "DH0:Archive", DON'T use "xScan XH0: ALL"
- but "xScan DH0:Archive ALL".
-
- THEORY
- How does "xScan" work ?
-
- If XFH scans through a directory it opens EVERY file to check if it's
- packed or not. That's why it's so slow.
- xScan scan once through the directories for files. If it finds one
- with an UNUSED filenote it adds a special one (filenote) to the file.
- This filenote contains an ID string, some check values and the length
- of the unpacked file(*).
- If the new XFH scans through the directories it checks for such
- filenotes and after finding one with still valid check values it'll
- take the unpacked length from the filenote without opening the file.
- That's why the new version is faster. Of course these special
- filenotes will be hidden.
-
- (*) I don't want to explain the format exactly, because people
- shouldn't use these informations.
-
- ARGUMENTS
- FILE: You can supply as many files, directories or patterns
- as you want.
-
- ALL: scan through directory trees
-
- REMOVE: remove filenotes instead of creating them
-
- Examples:
-
- xScan SYS:Archive/MetaFont ALL
-
- or
-
- xScan Docs/#?.doc REMOVE
-
- HISTORY
- 1.0
- - initial release for XFH 1.34
-
- 1.1
- - adds special filenotes to unpacked files, too
-
- 1.2
- - does NOT follow softlinks any more
-
- COPYRIGHT
- xScan is free to be spread on public-domain and shareware disks as
- long as they are sold for a reasonable charge that is less than $6.
- This applies not to Fred Fish, he and ONLY he can take more money.
- For use in commercial products the permission of the author is
- required.
-
- AUTHOR
- Matthias Scheler
- Schützenstraße 18
- 33178 Borchen
- Phone: +49-5251-399031
-
- InterNet: tron@lyssa.pb.owl.de
- FidoNet: Matthias Scheler 2:243/6310.10
-