{"id":105179,"date":"2022-09-27T15:37:00","date_gmt":"2022-09-27T13:37:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/dostupen-komandnyj-interpretator-bash-5-2"},"modified":"2022-09-27T15:37:00","modified_gmt":"2022-09-27T13:37:00","slug":"dostupen-komandnyj-interpretator-bash-5-2","status":"publish","type":"post","link":"https:\/\/prohoster.info\/it\/blog\/news\/dostupen-komandnyj-interpretator-bash-5-2","title":{"rendered":"\u00c8 disponibile l'interprete di comandi Bash 5.2","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Dopo venti mesi di sviluppo, \u00e8 stata pubblicata una nuova versione dell'interprete di comandi GNU Bash 5.2, utilizzato per impostazione predefinita nella maggior parte delle distribuzioni Linux. Contestualmente, \u00e8 stato rilasciato anche il pacchetto della libreria readline 8.2, utilizzata in bash per gestire l'editing della linea di comando.    <\/p>\n<p>Tra i principali miglioramenti si possono notare:  <\/p>\n<ul>\n<li class=\"l\"> Il codice per l'analisi delle sostituzioni dei comandi \u00e8 stato riscritto (sostituzione dei comandi, inclusa l'output di un'altra esecuzione di comando, ad esempio, &#171;$(comando)&#187; o `comando`). La nuova implementazione utilizza una chiamata ricorsiva al parser bison e offre un controllo della sintassi di qualit\u00e0 superiore con un rilevamento precoce degli errori nelle strutture sostitutive.\n<li class=\"l\"> Migliorata l'analisi e l'espansione degli indici degli array. Implementata la possibilit\u00e0 di utilizzare i parametri &#171;@&#187; e &#171;*&#187; nel comando interno unset per ripristinare una chiave con un valore specificato anzich\u00e9 azzerare l'intero array.\n<li class=\"l\"> Aggiunta una nuova impostazione &#171;patsub_replacement&#187;, che, se attivata, utilizza il simbolo &#171;&#038;&#187; nella stringa da sostituire per inserire parte della stringa corrispondente a un modello specificato. Per inserire il letterale &#171;&#038;&#187;, \u00e8 necessario eseguire l'escape con una barra rovesciata.\n<li class=\"l\"> Espanso il numero di situazioni in cui non viene eseguita la fork di processi aggiuntivi; ad esempio, fork non viene utilizzato con la struttura &#171;$(&lt;file)&#187;.\n<li class=\"l\"> \u00c8 stato implementato un nuovo framework interno per il timer e il calcolo dei timeout.\n<li class=\"l\"> \u00c8 possibile abilitare, durante la fase di costruzione (configure \u2014enable-alt-array-implementation), un'implementazione alternativa degli array, ottimizzata per massimizzare la velocit\u00e0 di accesso a scapito di un aumento del consumo di memoria.\n<li class=\"l\"> Espanso l'uso delle sostituzioni $&#8217;&#8230;&#8217; e $&#187;&#8230;&#187;, utilizzate nella localizzazione. Aggiunte le impostazioni noexpand_translations e l'opzione di costruzione &#171;configure \u2014enable-translatable-strings&#187;, che controllano l'inclusione del supporto per le sostituzioni localizzabili $&#187;&#8230;&#187;.\n<li class=\"l\"> Aggiunta e attivata per impostazione predefinita l'impostazione &#171;globskipdots&#187;, che impedisce il ritorno di &#171;.&#187; e &#171;..&#187; durante l'espansione dei percorsi.            <\/ul>\n<p>Fonte: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=57835\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u043e\u0441\u043b\u0435 \u0434\u0432\u0430\u0434\u0446\u0430\u0442\u0438 \u043c\u0435\u0441\u044f\u0446\u0435\u0432 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u0430 \u043d\u043e\u0432\u0430\u044f \u0432\u0435\u0440\u0441\u0438\u044f \u043a\u043e\u043c\u0430\u043d\u0434\u043d\u043e\u0433\u043e \u0438\u043d\u0442\u0435\u0440\u043f\u0440\u0435\u0442\u0430\u0442\u043e\u0440\u0430 GNU Bash 5.2, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u043c\u043e\u0433\u043e \u043f\u043e \u0443\u043c\u043e\u043b\u0447\u0430\u043d\u0438\u044e \u0432 \u0431\u043e\u043b\u044c\u0448\u0438\u043d\u0441\u0442\u0432\u0435 \u0434\u0438\u0441\u0442\u0440\u0438\u0431\u0443\u0442\u0438\u0432\u043e\u0432 Linux. \u041e\u0434\u043d\u043e\u0432\u0440\u0435\u043c\u0435\u043d\u043d\u043e \u0441\u0444\u043e\u0440\u043c\u0438\u0440\u043e\u0432\u0430\u043d \u0440\u0435\u043b\u0438\u0437 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 readline 8.2, \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u043c\u043e\u0439 \u0432 bash \u0434\u043b\u044f \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u0430\u0446\u0438\u0438 \u0440\u0435\u0434\u0430\u043a\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u043a\u043e\u043c\u0430\u043d\u0434\u043d\u043e\u0439 \u0441\u0442\u0440\u043e\u043a\u0438. \u0418\u0437 \u043a\u043b\u044e\u0447\u0435\u0432\u044b\u0445 \u0443\u043b\u0443\u0447\u0448\u0435\u043d\u0438\u0439 \u043c\u043e\u0436\u043d\u043e \u043e\u0442\u043c\u0435\u0442\u0438\u0442\u044c: \u041f\u0435\u0440\u0435\u043f\u0438\u0441\u0430\u043d \u043a\u043e\u0434 \u0434\u043b\u044f \u0440\u0430\u0437\u0431\u043e\u0440\u0430 \u043a\u043e\u043d\u0441\u0442\u0440\u0443\u043a\u0446\u0438\u0439 \u0437\u0430\u043c\u0435\u0449\u0435\u043d\u0438\u044f \u043a\u043e\u043c\u0430\u043d\u0434 (command substitution, \u043f\u043e\u0434\u0441\u0442\u0430\u043d\u043e\u0432\u043a\u0430 \u0432\u044b\u0432\u043e\u0434\u0430 \u043e\u0442 \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0434\u0440\u0443\u0433\u043e\u0439 \u043a\u043e\u043c\u0430\u043d\u0434\u044b, \u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, &#171;$(command)&#187; [&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-105179","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=\"\u041f\u043e\u0441\u043b\u0435 \u0434\u0432\u0430\u0434\u0446\u0430\u0442\u0438 \u043c\u0435\u0441\u044f\u0446\u0435\u0432 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u0430 \u043d\u043e\u0432\u0430\u044f \u0432\u0435\u0440\u0441\u0438\u044f \u043a\u043e\u043c\u0430\u043d\u0434\u043d\u043e\u0433\u043e \u0438\u043d\u0442\u0435\u0440\u043f\u0440\u0435\u0442\u0430\u0442\u043e\u0440\u0430 GNU Bash 5.2, 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