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OS/2 Shareware BBS: 9 Archive
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rar30b7.zip
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whatsnew.txt
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2002-05-14
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RAR - What's new in the latest version
Version 3.00 beta 7
1. In some cases modification of already existing archive performed
faster (optimized temporary files processing).
Version 3.00 beta 6
1. We opened the new international RAR site: www.rarlab.com.
You may visit it to download latest versions and register RAR.
Also do not forget that we have a lot of regional sites processing
RAR registrations. Complete list is available in rar_site.txt.
2. Archives with encrypted names are processed faster, especially
in case of long passwords.
Version 3.00 beta 5
1. Bugs fixed:
a) switch -p<pwd> encrypted contents of archive comment, so it
was not visible without a password, though normally it should be
encrypted only by -hp<pwd> switch, not -p<pwd>;
Version 3.00 beta 4
1. Speed of recovery volume based reconstructing is increased.
2. Bugs fixed:
a) beta 3 compressed small text files worse than previous beta
versions;
b) sometimes RAR could erroneously report "CRC error" and
refuse to update a completely correct RAR 3.0 solid archive.
Version 3.00 beta 3
1. Bugs fixed:
a) archives contained folders and stored (-m0 method) files
could not be converted to SFX;
b) 'rc' (reconstruct) command could show "Cannot open <vol*.*>"
message in case of more than 10 volumes;
c) beta 2 failed to decompress multivolume SFX archive
with encrypted file names.
Version 3.00 beta 2
1. Bugs fixed:
a) -md<size> accepted only character, but not numeric parameter;
b) repair did not work with RAR 2.x recovery records;
c) RAR crashed when processing switch -p without a parameter;
d) in some rare cases beta 1 could fail to decompress
a correct 3.0 archive, which can be decompressed by beta 2.
Version 3.00 beta 1
1. We introduced RAR 3.0 discount program, so a single user
license now is only $29.
As always, already registered users do not need to pay again.
RAR 1.x - 2.x registration is valid for 3.0 too.
2. Compression algorithm improved. Changes include:
a) dictionary size is increased to 4 MB, this helps to increase
compression on large data sets;
b) a special algorithm for text data, based on Dmitry Shkarin's
PPMd ver.H sources: ftp://ftp.elf.stuba.sk/pub/pc/pack/ppmdh.rar
We express our sincere gratitude and respect to Dmitry for
his excellent PPMd;
c) special preprocessing algorithms for 32-bit x86 executables,
Itanium executables, true color data, audio data and tables.
In many cases significantly increasing compression;
d) now RAR chooses the best combination of algorithms automatically,
so switch -mm is obsolete.
By default, RAR uses only the general compression algorithm
in the "Fast" and "Fastest" compression methods (-m1 and -m2),
advanced algorithms such as audio and true color processing are
enabled only in "Normal"..."Best" (-m3..-m5) modes, the advanced
text compression is activated only in "Good" and "Best"
compression (-m4..-m5). This default can be overridden using
the -mc switch.
RAR 3.0 archives can be unpacked by any RAR version beginning
from RAR 2.9, currently it is 2.9 and 3.0. RAR 3.0 can unpack
archives created by all older RAR versions.
3. Encryption algorithm is changed to AES (Advanced Encryption Standard)
with 128 bit key length.
4. Default volume naming scheme is changed from volname.rar,
volname.r00, ..., to volname.part001.rar, volname.part002.rar, etc.
Switch -vn allows to use the old extension based scheme.
5. Added support of so called recovery volumes (.rev files),
which can be used to reconstruct missing files in a volume set.
One .rev file allows to reconstruct one missing RAR volume,
for example, 5 .rev files are able to reconstruct any 5 volumes.
Use the command rv[n] or switch -rv[n] to create recovery volumes.
RAR automatically uses .rev files to reconstruct missing volumes
when unpacking or testing a volume set. It is also possible
to run the command 'rc' to force reconstructing.
I wish to thank developers of Mirror program, who invented
this idea and proposed to implement it in RAR.
6. Switch -hp<pwd> can be used instead of -p<pwd> to encrypt
both file data and file headers, so such information as file
names, sizes, comments will not be visible without a password.
7. Using switch -mc you may set advanced compression parameters
such as prediction order and memory size for the text compression
algorithm.
8. Switch -ms allows to specify files, which will be stored
without compression. For example, -msrar;zip;jpg.
It helps to increase archiving speed without noticeable
loss in the compression ratio.
9. Command line switch -t allows to test files after archiving.
This option is especially useful in combination with the move
command, so files will be deleted only if archive had been
successfully tested.
10. Switches -ta<date> and -tb<date> allow to add or extract files
modified after or before the specified date. Date format
is YYYYMMDDHHMMSS. It is allowed to insert separators like '-'
or ':' to date string and omit trailing fields. For example,
the following switch is correct: -ta2001-11-20.
11. Switch -ver tells RAR to keep old file versions in archive
when adding their new versions.
12. Switch -ad appends an archive name to destination path.
It may be useful when unpacking a few archives at once,
so files from each archive will go to separate folder.
13. Switch -en disables adding "end of archive block".
By default, RAR 3.0 adds "end of archive" block to the end of
new or updated archive. It allows to skip external data like
digital signatures safely, but in some special cases it may be
useful to disable this feature. For example, if an archive
is trasferred between two systems via a unreliable link and
at the same time a sender adds new files to it, it may be
important to be sure that the already received file part will
not be modified on the other end between transfer sessions.
14. Now RAR can update encrypted solid archives.
15. Error messages are sent to stderr instead of stdout.
16. New '+' modifier for -ag switch allows to place the date string
before a base archive name.
17. It is possible to use wildcards in the path part of file mask
in -x switch. For example, -x*\temp\*.
18. Switch -ilog accepts the optional log file name parameter.
For example, -ilogc:\log\backup.log.
Version 2.90
1. Now it is possible to use full file paths such as d:\path\name
in the exclude lists and -x<name> switch when archiving.
Earlier versions understood only relative file paths here.
2. New 'E' parameter for -ag switch denotes a day of year.
For example: rar a -agEEE backup.
3. To provide a reasonable tradeoff between compression and
reliability, RAR resets solid statistics between volumes
only if sufficient data (about 4 MB) had been processed since
the last reset.
You may use two new switches to change this default behaviour.
Switch -sv forces RAR to always reset statistics, regardless
of volume size, when -sv- disables such reset at all times.
Switch -sv- supersedes -sd, though the latter is also recognized
by RAR for compatibility purposes.
4. The choice "Never" is added to the file overwrite request
displayed by console mode RAR. Style of console RAR requests
is somewhat altered.
5. File lists (@listfile parameters of the command line) may now
contain comments preceeded by // characters. For example:
c:\work\doc\*.txt //backup text documents
c:\work\image\*.bmp //backup pictures
Version 2.80
1. Command 's-' allows to remove SFX module from SFX archive.
2. Switch '-ag' supports two new format parameters:
a) 'W' - a number of the current week in a year;
b) 'A' - a number of the current day in a week.
Weeks start with Sunday.
3. New switch '-k' - lock archive.
4. New switch '-vp' - pause after each volume.
5. You may specify the recovery record size as a percentage of
the total archive size in 'rr' command and '-rr' switch.
For example, -rr3%
6. New -ep2 switch - store full file paths when archiving.
7. Switch -sv is removed, now RAR by default creates independent
volumes. You may override it using the new -sd switch, but note
that it reduces your chances to restore a part of data in case
of archive damage.
Version 2.71
1. When using -as switch the previous version sometimes displayed
a wrong file name in the "Deleting <filename>" message.
Corrected now.
Version 2.70
1. Both compression and speed have been improved.
My thanks to Alexander Khoroshev, who, once again, provided
invaluabel assistance to improve this new version.
2. Total progress percentage is displayed when testing or extracting
from a single RAR archive (except volumes) or group of archives.
3. New command line switches -to<time> and -tn<time> allow to
process files older or newer than specified time.
4. Switch -rr and command RR are not limited to 8 recovery sectors.
Now the recovery record may contain up to 4096 sectors.
If the sectors number is not specified, the size of the recovery
information is about 1.2% of the total archive size, this usually
allows the recovery of up tp 0.7% of continuously damaged data
of the total archive size.
Note that recovery records larger than 8 sectors cannot be used
by previous RAR versions.
5. The default value of dictionary size is changed to 1024KB.
6. RAR now supports wildcards in the archive name also in 'RR' command.
7. New switch -idp disables displaying of the percentage indicator.
May be useful when redirecting RAR output to a file.