Il s’agit d’un puissant utilitaire de compression/décompression gratuit. Très utile, il permet de compresser en zip avec un taux de compression bien plus élevé que les autres compresseurs de format. De plus son célèbre format 7z permet de compresser jusqu’à 50% de + que le zip classique sur certaines archives et davantage que le format RAR (de Winrar).
Il est également capable de décompacter beaucoup de formats d’installeurs que plusieurs programmes utilisent (ce qui évite parfois une installation forcée). Très recommandé si vous voulez utiliser ZipMax, outil de l’auteur de ClrMAMEPro.
Les améliorations sont nombreuses depuis la 16.02:
– 7-Zip now can unpack DMG archives that use LZFSE compression method.
– 7-Zip now doesn’t allow update operation for archives that have read-only attribute.
– The BUG was fixed:
extracting from tar with -si switch didn’t set timestamps for directories.
– Some bugs were fixed.
– 7-Zip now can unpack OBJ/COFF files.
– new -sse switch to stop archive creating, if 7-Zip can’t open some input file.
– Some bugs were fixed.
– Minor speed optimization for LZMA2 (xz and 7z) multi-threading compression.
– 7-Zip now uses additional memory buffers for multi-block LZMA2 compression.
– CPU utilization was slightly improved.
– 7-zip now creates multi-block xz archives by default. Block size can be
specified with -ms[Size]{m|g} switch.
– xz decoder now can unpack random block from multi-block xz archives.
7-Zip File Manager now can open nested multi-block xz archives
(for example, image.iso.xz) without full unpacking of xz archive.
– 7-Zip now can create zip archives from stdin to stdout.
– 7-Zip command line: @listfile now doesn’t work after — switch.
Use -i@listfile before — switch instead.
– The BUGs were fixed:
.7-Zip could add unrequired alternate file streams to WIM archives,
for commands that contain filename wildcards and -sns switch.
.7-Zip 17.00 beta crashed for commands that write anti-item to 7z archive.
.7-Zip 17.00 beta ignored « Use large memory pages » option.
– ZIP unpacking code was improved.
– 7-Zip now reserves file space before writing to file (for extraction from archive).
It can reduce file fragmentation.
– Some bugs were fixed. 7-Zip could crash in some cases.
– Internal changes in code.
– The bug was fixed: 7-Zip 16.03 exe installer under Vista didn’t create
links in Start / Programs menu.
– Some bugs were fixed in RAR code.
– Installer and SFX modules now use some protection against DLL preloading attack.
– Some bugs were fixed in 7z, NSIS, SquashFS, RAR5 and another code.
NB: Si des anciennes archives avaient des problèmes pour être ouvertes/extraites (ce qui devrait être très rare et dans des cas spécifiques), lire cette page.
Télécharger 7-Zip (x86) v23.01 (1.2 Mo)
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