XZ Utils (XZ archiver)

Data rilascio: 
Martedì, 14 Febbraio, 2017



XZ Utils è un software gratuito per la compressione dei dati altamente efficiente: puo' comprimere un file fino al 30% in meno rispetto a gzip.

Questo software è distribuito con due modalità:
  • come pacchetto compresso, da scaricare e installare manualmente; se ci sono prerequisiti da soddisfare, andranno anch'essi scaricati e installati manualmente;
  • come pacchetto RPM, installabile tramite il gestore pacchetti rpm preferito, che provvederà a scaricare e installare sia il software che gli eventuali prerequisiti.
Scegli la modalità di installazione che preferisci, tenendo conto del fatto che non tutte le versioni del software sono disponibili per entrambe le modalità.

Installazione con rpm

Questo programma si può installare usando il gestore pacchetti rpm. Vedi sotto per la stringa di installazione. I prerequisiti richiesti sono gestiti dal gestore pacchetti e, se necessario, scaricati e installati automaticamente.

xz-5.2.3-2.oc00 (14/02/2017)
Repository: Netlabs stable
XZ Utils Release Notes ====================== 5.2.3 (2016-12-30) * xz: - Always close a file before trying to delete it to avoid problems on some operating system and file system combinations. - Fixed copying of file timestamps on Windows. - Added experimental (disabled by default) sandbox support using Capsicum (FreeBSD >= 10). See --enable-sandbox in INSTALL. * C99/C11 conformance fixes to liblzma. The issues affected at least some builds using link-time optimizations. * Fixed bugs in the rarely-used function lzma_index_dup(). * Use of external SHA-256 code is now disabled by default. It can still be enabled by passing --enable-external-sha256 to configure. The reasons to disable it by default (see INSTALL for more details): - Some OS-specific SHA-256 implementations conflict with OpenSSL and cause problems in programs that link against both liblzma and libcrypto. At least FreeBSD 10 and MINIX 3.3.0 are affected. - The internal SHA-256 is faster than the SHA-256 code in some operating systems. * Changed CPU core count detection to use sched_getaffinity() on GNU/Linux and GNU/kFreeBSD. * Fixes to the build-system and xz to make xz buildable even when encoders, decoders, or threading have been disabled from libilzma using configure options. These fixes added two new #defines to config.h: HAVE_ENCODERS and HAVE_DECODERS.
xz-debuginfo-5.2.3-2.oc00 (14/02/2017)
Repository: Netlabs stable
xz-devel-5.2.3-2.oc00 (14/02/2017)
Repository: Netlabs stable (note: development files, not needed by the end user)
xz-libs-5.2.3-2.oc00 (14/02/2017)
Repository: Netlabs stable
xz-lzma-compat-5.2.3-2.oc00 (14/02/2017)
Repository: Netlabs stable

Installazione manuale

Il programma è distribuito come pacchetto ZIP: scaricare in una cartella temporanea e scompattare nella cartella di destinazione, preferibilmente in PATH. Vedi sotto per il(i) link di download.

E' possibile installare i prerequisiti con rpm, eseguendo la stringa seguente in una finestra comandi:

yum install libc libcx libgcc1 libssp libstdc++6 libstdc++ libsupc++6 libsupc++ libgcc-fwd emxrt

Qui di seguito trovi i link di download per l'installazione manuale del software:

EMX v. 5.0.8 (14/7/2015, Mikulas Patocka)
EMX v. 5.0.7 (24/12/2014, Mikulas Patocka, Lasse Collin)
XZ Utils (XZ archiver) v. 5.0.5 (21/9/2013, Mikulas Patocka, Lasse Collin)
EMX v. 5.0.4 (26/6/2012, Mikulas Patocka, Lasse Collin)
EMX v. 5.0.3 (24/12/2011, Mikulas Patocka, Lasse Collin)
XZ Utils (XZ archiver) v. 5.0.3 (20/12/2011, Paul Smedley (Smedles)) Readme/What's new
XZ Utils Release Notes ====================== 5.0.3 (2011-05-21) * liblzma fixes: - A memory leak was fixed. - lzma_stream_buffer_encode() no longer creates an empty .xz Block if encoding an empty buffer. Such an empty Block with LZMA2 data would trigger a bug in 5.0.1 and older (see the first bullet point in 5.0.2 notes). When releasing 5.0.2, I thought that no encoder creates this kind of files but I was wrong. - Validate function arguments better in a few functions. Most importantly, specifying an unsupported integrity check to lzma_stream_buffer_encode() no longer creates a corrupt .xz file. Probably no application tries to do that, so this shouldn't be a big problem in practice. - Document that lzma_block_buffer_encode(), lzma_easy_buffer_encode(), lzma_stream_encoder(), and lzma_stream_buffer_encode() may return LZMA_UNSUPPORTED_CHECK. - The return values of the _memusage() functions are now documented better. * Fix command name detection in xzgrep. xzegrep and xzfgrep now correctly use egrep and fgrep instead of grep. * French translation was added.
XZ Utils (XZ archiver) v. 4.99 (31/8/2009, Elbert Pol (TeLLie))
Scheda aggiornata l'ultima volta il: 08/09/2019 - 14:27

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