home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Share Gallery 1
/
share_gal_1.zip
/
share_gal_1
/
UT
/
UT230.ZIP
/
DFL311.EXE
/
WHATSNEW
< prev
Wrap
Text File
|
1992-01-09
|
4KB
|
75 lines
December 15, 1991
Whats new in DFL version 3.11 since version 3.02:
1. W.S.Ataras Engineering is a member of the Association of Shareware
Professionals (ASP). ASP wants to make sure that the shareware principle
works for you. This software conforms to ASP standards.
2. The shareware version of DFL no longer has archive support disabled. The
only difference between the shareware and registered versions of DFL are a
startup and exit registration reminder screen. All functions are enabled.
3. Registered users receive a printed manual.
4. DFL now directly accesses recognizable archive file formats. Currently,
only the ZIP format is recognized. If an archive format is unrecognized or
the author changes it, DFL will revert to indirect access. In other words,
DFL is still able to access all archives, but the widely used ZIP format
is now processed far more quickly.
5. Added "Users' Question and Answer" section in manual. This section is
updated with useful correspondence with registered and non-registered DFL
users. And YES, we're happy to communicate with non-registered users.
6. Rearranged menus slightly for aesthetics.
7. International Language Support.
8. Added F2 print function to file viewing window.
9. Monochrome display improved.
10. Added '/mono' command-line option to force monochrome colors for weird
display adapter/monitor combinations. It may also be used with the
installation program.
11. Added the following new scan modes -
A. Path Mode -
DFL will scan your Path (see your dos manual for a description of the
Path) for duplicate executables. The selected disks and scan mask are
ignored. Only files matching *.EXE, *.COM and *.BAT on the Path are
examined. As an example, DFL.EXE, DFL.COM and DFL.BAT are duplicate
executables that, if in the Path, can cause some frustrating confusion.
B. FastAlias Mode -
In FastAlias mode, DFL attempts to locate files with duplicate contents
using 32 bit CRCs. That is, files with equal lengths and equal CRCs are
assumed to be duplicate. The chances of two files meeting this criteria
and having different contents are on the order of 1 in millions. Under
this mode, files that are determined to be duplicate are PRACTICALLY
GUARANTEED to actually be duplicate. The benefits of this mode are:
1. The files are never actually compared byte-by-byte as in FullAlias
mode (described below). This dramatically decreases the search time
and disk activity.
2. Very time-consuming recursive situations that occur in previous
versions of DFL are avoided.
3. DFL uses the same 32 bit CRC that is used in ZIP files. This means
that doing a FastAlias search through ZIP files is incredibly fast
because CRCs for the archived files are already computed and files
never need to be extracted for a byte-by-byte comparison.
C. Changed the old Alias mode to FullAlias Mode -
In FullAlias mode, DFL attempts to locate files with duplicate contents
by performing byte-by-byte comparisons of the contents of equal length
& CRC files. Under this mode, files that are determined to be duplicate
are GUARANTEED to actually be duplicate. This mode is essentially the
same as FastAlias (described above) with the addition that the contents
of two files are compared after the length and CRC are determined to be
equal. The benefits of this mode are:
1. Because of the CRC layer, DFL knows ahead of time which files
actually need to be compared and thus, performs fewer comparisons.
Previous versions of DFL took the John Wayne approach and compared
all equal length files. Users of older versions of DFL should notice
a dramatic speed improvement in their Alias searches.
2. Unlike the 1-in-millions possibility under FastAlias, duplicate
files found by FullAlias are GUARANTEED duplicate.