{"id":101398,"date":"2021-09-24T22:22:40","date_gmt":"2021-09-24T20:22:40","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-nabora-bazovyh-sistemnyh-utilit-gnu-coreutils-9-0"},"modified":"2021-09-24T22:22:40","modified_gmt":"2021-09-24T20:22:40","slug":"vypusk-nabora-bazovyh-sistemnyh-utilit-gnu-coreutils-9-0","status":"publish","type":"post","link":"https:\/\/prohoster.info\/it\/blog\/news\/vypusk-nabora-bazovyh-sistemnyh-utilit-gnu-coreutils-9-0","title":{"rendered":"Rilascio della suite di utilit\u00e0 di sistema di base GNU Coreutils 9.0","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>\u00c8 disponibile una versione stabile del pacchetto di utilit\u00e0 di sistema di base GNU Coreutils 9.0, che include programmi come sort, cat, chmod, chown, chroot, cp, date, dd, echo, hostname, id, ln, ls, ecc. Il cambiamento significativo del numero di versione \u00e8 dovuto a modifiche nel comportamento di alcune utilit\u00e0.    <\/p>\n<p>Principali modifiche:  <\/p>\n<ul>\n<li class=\"l\"> Nelle utilit\u00e0 cp e install, per impostazione predefinita, durante la copia viene utilizzata la modalit\u00e0 copy-on-write (utilizzando ioctl ficlone per la condivisione dei dati tra pi\u00f9 file invece di creare una copia completa).\n<li class=\"l\"> Nelle utilit\u00e0 cp, install e mv sono stati utilizzati i meccanismi di accelerazione delle operazioni di copia forniti dal sistema (utilizzando la chiamata di sistema copy_file_range per eseguire la copia solo sul lato kernel senza trasferire i dati nella memoria del processo nello spazio utente).\n<li class=\"l\"> Nelle utilit\u00e0 cp, install e mv, per determinare i buchi nei file, \u00e8 stata utilizzata una chiamata pi\u00f9 semplice e portabile lseek+SEEK_HOLE invece di ioctl+FS_IOC_FIEMAP.\n<li class=\"l\"> Nell'utilit\u00e0 wc, per accelerare il conteggio delle righe, sono state utilizzate istruzioni AVX2. Con questa ottimizzazione, la velocit\u00e0 di wc \u00e8 aumentata di 5 volte.\n<li class=\"l\"> Nell'utilit\u00e0 cksum \u00e8 stata aggiunta l'opzione &#171;-a&#187; (&#8212;algorithm) per scegliere l'algoritmo di hashing. Per accelerare il calcolo delle somme di controllo, nell'utilit\u00e0 cksum sono state utilizzate le istruzioni pclmul con l'uso della modalit\u00e0 &#171;&#8212;algorithm=crc&#187;, che ha permesso di velocizzare i calcoli fino a 8 volte. Nei sistemi privi di supporto pclmul, la modalit\u00e0 crc \u00e8 stata accelerata di 4 volte. Gli altri algoritmi di hashing (sum, md5sum, b2sum, sha*sum, sm3, ecc.) sono stati implementati tramite l'invocazione delle funzioni libcrypto.\n<li class=\"l\"> Nelle utilit\u00e0 md5sum, cksum, sha*sum e b2sum, utilizzando l'opzione &#171;&#8212;check&#187;, \u00e8 consentita la presenza di una sequenza CRLF alla fine della riga con la somma di controllo. In &#171;cksum &#8212;check&#187; \u00e8 fornita l'automazione del riconoscimento dell'algoritmo di hashing utilizzato.\n<li class=\"l\"> Nell'utilit\u00e0 ls \u00e8 stata aggiunta l'opzione &#171;&#8212;sort=width&#187; per ordinare in base alla lunghezza del nome del file, cos\u00ec come l'opzione &#171;&#8212;zero&#187; per terminare ogni riga con un carattere nullo. \u00c8 stato ripristinato il comportamento precedente, che porta a mostrare una directory vuota invece di un errore nel caso di elaborazione di una directory eliminata.\n<li class=\"l\"> Nell'utilit\u00e0 df \u00e8 stata implementata la rilevazione dei file system di rete acfs, coda, fhgfs, gpfs, ibrix, ocfs2 e vxfs.\n<li class=\"l\"> Nelle utilit\u00e0 stat e tail \u00e8 stato aggiunto il supporto per i tipi di file system &#171;devmem&#187;, &#171;exfat&#187;, &#171;secretmem&#187;, &#171;vboxsf&#187; e &#171;zonefs&#187;. Per &#171;vboxsf&#187; il monitoraggio delle modifiche in &#171;tail -f&#187; utilizza il polling, mentre per gli altri &#8212; inotify.  <\/ul>\n<p>Fonte: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=55865\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0414\u043e\u0441\u0442\u0443\u043f\u043d\u0430 \u0441\u0442\u0430\u0431\u0438\u043b\u044c\u043d\u0430\u044f \u0432\u0435\u0440\u0441\u0438\u044f \u043d\u0430\u0431\u043e\u0440\u0430 \u0431\u0430\u0437\u043e\u0432\u044b\u0445 \u0441\u0438\u0441\u0442\u0435\u043c\u043d\u044b\u0445 \u0443\u0442\u0438\u043b\u0438\u0442 GNU Coreutils 9.0, \u0432 \u0441\u043e\u0441\u0442\u0430\u0432 \u043a\u043e\u0442\u043e\u0440\u043e\u0433\u043e \u0432\u0445\u043e\u0434\u044f\u0442 \u0442\u0430\u043a\u0438\u0435 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u044b, \u043a\u0430\u043a sort, cat, chmod, chown, chroot, cp, date, dd, echo, hostname, id, ln, ls \u0438 \u0442.\u0434. \u0417\u043d\u0430\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u0430\u044f \u0441\u043c\u0435\u043d\u0430 \u043d\u043e\u043c\u0435\u0440\u0430 \u0432\u0435\u0440\u0441\u0438\u0438 \u043e\u0431\u044a\u044f\u0441\u043d\u044f\u0435\u0442\u0441\u044f \u043d\u0430\u043b\u0438\u0447\u0438\u0435\u043c \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u0439 \u0432 \u043f\u043e\u0432\u0435\u0434\u0435\u043d\u0438\u0438 \u043d\u0435\u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u0443\u0442\u0438\u043b\u0438\u0442. \u041a\u043b\u044e\u0447\u0435\u0432\u044b\u0435 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f: \u0412 \u0443\u0442\u0438\u043b\u0438\u0442\u0430\u0445 cp \u0438 install \u043f\u043e \u0443\u043c\u043e\u043b\u0447\u0430\u043d\u0438\u044e \u043f\u0440\u0438 \u043a\u043e\u043f\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0438 \u0437\u0430\u0434\u0435\u0439\u0441\u0442\u0432\u043e\u0432\u0430\u043d [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-101398","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0414\u043e\u0441\u0442\u0443\u043f\u043d\u0430 \u0441\u0442\u0430\u0431\u0438\u043b\u044c\u043d\u0430\u044f \u0432\u0435\u0440\u0441\u0438\u044f \u043d\u0430\u0431\u043e\u0440\u0430 \u0431\u0430\u0437\u043e\u0432\u044b\u0445 \u0441\u0438\u0441\u0442\u0435\u043c\u043d\u044b\u0445 \u0443\u0442\u0438\u043b\u0438\u0442 GNU Coreutils 9.0, \u0432 \u0441\u043e\u0441\u0442\u0430\u0432 \u043a\u043e\u0442\u043e\u0440\u043e\u0433\u043e \u0432\u0445\u043e\u0434\u044f\u0442 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