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-
- DD - Directory Scanner 1.0
-
- (c) 1993 Martin Mares, MJSoft System Software
-
- ============================================================================
-
-
- Preface
- =======
-
- DD and its documentation is Copyright (c) Martin Mares, MJSoft System
- Software, Prague, Czech Republic.
-
- This archive can be freely redistributed, as long as all of its files are
- included in their original form without any additions, deletions or
- modifications, and no more than a nominal fee is charged for its distribution.
- All copyright notices in the programs and accompanying documentation files
- must remain on their places. Also '.displayme' and other similar files may
- not be added. This is generally known as FREEWARE.
-
- Special permission is given to Fred Fish to distribute this program on his
- "Fish Disks".
-
- This software is provided "AS IS" without warranty of any kind, either
- expressed or implied. The author is not responsible for any damage caused by
- it.
-
-
- Contents
- ========
-
- 1. Introduction
- 2. Command line syntax
- 3. Display options
- 4. Analysis options
- 5. Sort options
- 6. Other options
- 7. Abbreviations
- 8. Output format
- 9. Statistics
- 10. Remarks
-
-
- 1. Introduction
- ===============
-
- DD is something like DIR or LIST. But it does much more. It can use many
- different types of file lists, sort file lists, analyse file contents, display
- statistics, search for identical files and so on. Unless otherwise specified,
- DD scans and displays full subdirectory structure.
-
- DD can work in two modes: quick and normal. Quick mode uses direct access
- to the disk and is significantly faster, but it can be used only with standard
- Amiga formats (OFS and FFS). DD will choose this mode automatically whenever
- it's possible. Normal mode uses standard DOS calls and can be used with any
- filesystem. You can force DD to use this mode using option NOFAST.
-
- DD requires kickstart 1.0 or higher and the arp.library (true arp, it
- doesn't work with suspicious arp replacements for kickstart 2.0). File
- analysis requires the analyser.library, which is included in this archive.
-
-
- 2. Command line syntax
- ======================
-
- DD can be run only from CLI, not from Workbench. All parameters are
- supplied in the command line in one of following formats:
-
- (1) DD [<options>] (lists current directory)
- (2) DD <path> [<options>] (lists specified directory)
- (3) DD <path+pattern> [<options>] (find files, which match the pattern)
- (4) DD <filename> [<options>] (analyse specified file)
-
- - If you want to search for one file, you can specify it using
- character classes. For example: file "Columns" can be found using
- "Column[s]".
-
- DD also supports definition of a default environment variable called
- DDOPT (both standard and ARP variables). You can store your favourite
- options to this variable and DD will use them as defaults. The defaults
- can be overriden by command line options (if you have DDOPT=sort n and you
- wish to sort by size, simply enter DD sort s). Default switches can be
- disabled using '-' followed by switch name (for example DD -HIDESUB)).
-
-
- 3. Display options
- ==================
-
- You can use any of following display options:
-
- (1) NAMES - Display only file names. Followed by type of names:
- R (Relative) - display names with path relative to current dir.
- F (Full) - display file names with full path.
- P (Plain) - display only file names
-
- (2) COL - Display file names in columns. Directories will be enclosed
- in '[' and ']'.
-
- (3) LFORMAT - User-defined display type. Followed by string, which
- describes this format. String can contain:
- %f (Full) - insert file name with full path on this place
- %r (Relative) - insert file name with relative path
- %s - same as %r (for compatibility with LFORMAT option
- in LIST command)
- %p (Plain) - insert file name without path
- %a (Analysis) - insert result of analysis
- %c (Comment) - insert file comment
- %% - Insert single '%' character
-
- (4) QUIET - Don't display any file list.
-
- (5) TREE - Display files and directories with "tree" structure.
-
- (6) - Default is the full display. It consists of file/dir names in
- the first column, sizes (or <DIR> or <ContentsSize> if it's a
- directory) and comments. In the "comments" column can be
- displayed standard filenotes (introduced by the ":" sign) or
- the analysis results.
-
- - Empty directories won't be displayed in pattern searching mode.
-
- The file/directory links (with kickstart 2.0 or higher) are displayed
- only in modes (5) and (6), but they are properly included in the final
- statistics independently on their visibility.
-
-
- 4. Analysis options
- ===================
-
- If you decide to use the analysis, you should specify your requirement by
- using "ANA" option followed by single letter indicating the type of the
- analysis and (optionally) by the list of letters specifying requested analysis
- reports.
-
- Types of analysis:
- (for better informations on speed see the Speed Statistics section)
-
- (1) S (Simple) - analyses only file names. It may cause some mistakes in
- analysis result (for example if you have an executable file
- named ghost.asm). But it's very fast - it adds only few
- seconds to the directory scan time.
-
- (2) C (Contents)-analyses only file contents. It is the most reliable method
- of analysis, but it doesn't find all file types. It's very
- slow in Normal mode (because a lot of file operations must
- be done).
-
- (3) G (Good) - mostly analyses only file names, but if it doesn't give
- any usable result, the file contents analysis is used.
- Faster than Contents mode.
-
- (4) F (Full) - both analysis methods (file names and file contents) are
- used. Then the analyser selects better of the results.
-
- These analysis types can be followed by the 'R' (Reliable) option. It
- disables all non-reliable analysis results (PCX Picture etc.).
-
- Types of reports:
-
- (1) S (Stat) - display all used file types in alphabetical order,
- followed by number of files of this type and percentage.
-
- (2) Q (Quantity) display all used file types as in S(tat) report, but
- sorted in quantity order.
-
- (3) M (Max) - as Q(uantity) report, but displays only file types with
- number of files greater than 5 percent of scanned area.
-
- (4) D (Dir) - display mostly used file type in each directory. Can be
- used only in default display mode.
-
- (5) Y (System) - analyse system files. Test, if they are present on the
- system disk.
-
-
- 5. Sort options
- ===============
-
- Sorting can be switched on using the SORT option followed by a string,
- which describes sort order. The string consists of letters specifying data
- items, which can be prefixed by the '^' character indicating reverse sort
- order.
-
- (1) D (Dirs) - sort directories first, files last.
-
- (2) S (Size) - sort files incrementally by the size. Directories are
- sorted by size of their contents in the STAT mode, else are
- placed first (their size is assumed as 0)
-
- (3) N (Name) - sort by file name.
-
- (4) E (Ext.) - sort by file extension (file name part after '.'),
- files without extension are at first places.
-
- (5) P (Path) - sort by file name with full path.
-
- (6) A (Analysis)-sort by analysis result, files without analysis report
- are at last places.
-
-
- 6. Other options
- ================
-
- (1) NOFAST - don't use Quick mode. Mostly usable for speed comparisons.
- Also can be used if the Quick mode doesn't work (it should
- NOT happen).
-
- (2) NOHEAD - don't print the header and footer of the dump.
-
- (3) HIDESUB - don't display contents of subdirectories.
-
- (4) STAT - display size of files in subdirectories. Only for Full
- display mode.
-
- (5) BYTES - display all file/media sizes in bytes instead of KB or MB
- (choosen automatically)
-
- (6) DIRS - display names of subdirectories in the dump.
-
- (7) MERGE - merge all subdirectories to the main directory. Can be used
- to sort ALL files by size and so on.
-
- (8) NOCOM - don't scan file comments.
-
- (9) FIDENT - find identical files on the disk.
-
- (10) ANAFILT - use analysis filter. Display only files with analysis result
- matching given pattern. Don't forget that '*' sometimes has
- special meaning in ARP argument parsing.
-
-
- 7. Abbreviations
- ================
-
- The most of options can be abbreviated:
-
- NOFAST -> NF NOHEAD -> NH ANAFILT -> AF
- NAMES -> N COL -> C LFORMAT -> L
- QUIET -> Q TREE -> T STAT -> ST
- HIDESUB -> H BYTES -> B SORT -> S
- ANA -> A DIRS -> D MERGE -> M
- NOCOM -> NC FIDENT -> FI
-
-
- 8. Output format
- ================
-
- DD output consists of:
-
- (1) The header in form "Analysis of <dir> on volume <vol>"
- <dir> - directory name
- <vol> - volume name
-
- (2) The subheader in form "Device: <dvc>,<fs>,<acc> - Size <sz> - Free <fr>"
- <dvc> - name of device which contains the volume
- <fs> - identification of used file system
- OFS - standard (old) file system
- FFS - FastFileSystem
- OFS-I,FFS-I - international version of OFS/FFS
- OFS-C,FFS-C - directory cache version of OFS/FFS
- FFS-1K - FastFileSystem with 1K data blocks (RAM: on 2.0)
- MSDOS - MSDOS File System (CrossDos ...)
- MSDOS/DD - MSDOS File System with Double Stepping (5.25", DD)
- ?FS - unknown file system
- /QUICK - Quick mode will be used
- <acc> - access type
- READ/WRITE - you can do everything you can
- READ ONLY - you can only READ this volume
- NOT VALIDATED - this volume is not validated, the volume
- free space information isn't available
- <sz> - volume size in bytes (or KB or MB)
- <fr> - free volume space in bytes (/KB/MB) and percents of
- the volume capacity
-
- (3) The file list in format selected by Display options
-
- (4) The analysis reports selected by Analysis options
-
- (5) The analysis statistics (if there's any analysis report), which
- contains number and percentage of classified files.
-
- (6) The system files analysis report. It's a list of system modules
- (libraries, devices, handlers, ...) found in scanned area. Each of the
- files can be described by:
- Length: <ll> - file size
- Id: <id> - resident module identification string
- SysId: <id> - id. string of this module on the system disk
- (displayed only in some cases)
- Version: <ver> - resident module version
- It is followed by a message saying something about presence of this
- file on your system disk.
-
- On the end, there can be a final classification if there's some file
- newer than on your system disk or if DD can't say it's same or older.
-
- (7) The file identity report. It consists of a list of empty files and a
- list of duplicates followed by statistics saying how many duplicates
- are there and how many bytes is in them.
-
- (8) The final statistics in form
- "<f> files in <d> dirs - <s> - <p> % of disk - <sl> in slacks"
- <f> - number of files
- <d> - number of directories
- <s> - total size of files
- <p> - how many percents of the disk occupies analysed
- file and directory structure
- <sl> - how many bytes and percents of data area are in "slacks"
- (Slacks are the fragments of data blocks, which contain
- no data)
-
- <p> and <sl> is displayed only for standard OFS and FFS devices, but
- not for the 1.3 RAM: device.
-
- - the <sl> field may contain slightly non-reliable results for
- disks with 1.3 FFS (especially harddisks), but only when the
- QUICK mode is not used.
-
-
- 9. Statistics
- =============
-
- This section describes how fast and how memory intensive are the tasks
- performed by DD.
-
-
- *** SPEED STATISTICS ***
-
- All time values include DD loading time and are measured by the Stat
- utility with DD in QUIET mode. (These values are for some ancient version of
- DD, this version should give better results)
-
-
- Pure scanning:
-
- Quick Mode Normal Mode Media
- ---------------------------------------------------------------------------
- 50.5 s 93.2 s HD,FFS,43M,93% full,5739 files,259 dirs
- 12.8 s 43.9 s FD,OFS,838K,98% full,124 files,12 dirs
- 10.4 s 28.9 s FD,OFS,838K,98% full,55 files,19 dirs
- 14.4 s 69.4 s FD,OFS,838K,79% full,197 files,12 dirs
- 0.5 s 8.4 s FD,OFS,838K,84% full,2 files,2 dirs
- 2.2 s 2.3 s FD,FFS,902K,99% full,10 files,2 dirs
-
-
- Sorting of HD (43M,93% full,5739 files,259 dirs):
-
- Criteria Sort Time
- ---------------------------------------------------------------------------
- Name 9.8 s
- Extension 15.8 s
- Path 38.9 s
- Size 3.7 s
- Ext,Size 20.9 s
-
-
- Analysis of HD (43M,93% full,5739 files,259 dirs):
-
- Analysis Type Quick Mode Normal Mode
- ---------------------------------------------------------------------------
- Simple 69.0 s 111.5 s
- Contents 125.0 s 590.4 s
- Good 115.8 s 452.3 s
- Full 143.0 s <not measured>
- Simple + Sort 74.4 s <not measured>
-
-
- Searching for Identical Files (Output to RAM:)
-
- Quick Mode Normal Mode Media
- ---------------------------------------------------------------------------
- 362.0 s 731.5 s HD,FFS,43M,93% full,5739 files,259 dirs
- 21.5 s 51.2 s FD,OFS,838K,98% full,124 files,12 dirs
-
-
- *** MEMORY USAGE STATISTICS ***
-
- (Measured by the Stat utility, includes size of DD)
-
- Pure scanning of HD (43M,93% full,5739 files,259 dirs,Quick): 310218 B
- Pure scanning of HD (43M,93% full,5739 files,259 dirs): 287566 B
- Pure scanning of FD (OFS,79% full, 197 files, 12 dirs,Quick): 33612 B
- Pure scanning of FD (OFS,79% full, 197 files, 12 dirs): 32622 B
- Any Analysis of HD (43M,93% full,5739 files,259 dirs,Quick): 437690 B
- Any Analysis of HD (43M,93% full,5739 files,259 dirs): 415038 B
- FIDENT on HD (43M,93% full,5739 files,259 dirs,Quick): 442130 B
- FIDENT on HD (43M,93% full,5739 files,259 dirs): 314662 B
-
-
- 10. Remarks
- ===========
-
- - Send all comments and bug reports to mjsoft@k332.feld.cvut.cz.
-
-
- ??? IN FUTURE VERSIONS ???
-
- - There will be some output buffers -> faster output.
-
- - Analyser will recognise more file types.
-
- - Report of the FIDENT option will be sorted by file name instead of file
- size.
-
- - There will be some file output (?)
-
-
- *** THANKS ***
-
- - To Vojtech Pavlik for some ideas in his DD for PC.
-
- - To Tomas Zikmund, Pavel Troller, Petr Cisar, Karel Zatloukal, Jan Kratochvil
- and many other people for beta-testing and suggestions.
-
- - To Amiga hardware for all...
-
- - To Amiga operating system for his geniality.
-
- - To BCPL for a lot of suspicious things.
-
- - To the slow movement of drive heads for the idea of my caching algorithms.
-
-
- *** END ***
-
- ================================================================================
-