{"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\/cs\/blog\/news\/dostupen-komandnyj-interpretator-bash-5-2","title":{"rendered":"Je dostupn\u00fd p\u0159\u00edkazov\u00fd interpret Bash 5.2","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Po dvaceti m\u011bs\u00edc\u00edch v\u00fdvoje byla vyd\u00e1na nov\u00e1 verze p\u0159\u00edkazov\u00e9ho interpreteru GNU Bash 5.2, kter\u00fd se ve v\u011bt\u0161in\u011b distribuc\u00ed Linux pou\u017e\u00edv\u00e1 jako v\u00fdchoz\u00ed. Sou\u010dasn\u011b byl uvoln\u011bn release knihovny readline 8.2, kter\u00e1 se v bash pou\u017e\u00edv\u00e1 k organizaci \u00faprav p\u0159\u00edkazov\u00e9ho \u0159\u00e1dku.    <\/p>\n<p>Mezi hlavn\u00ed vylep\u0161en\u00ed pat\u0159\u00ed:  <\/p>\n<ul>\n<li class=\"l\"> Byl p\u0159epracov\u00e1n k\u00f3d pro zpracov\u00e1n\u00ed konstrukc\u00ed substituce p\u0159\u00edkaz\u016f (command substitution, vlo\u017een\u00ed v\u00fdstupu z proveden\u00ed jin\u00e9ho p\u0159\u00edkazu, nap\u0159\u00edklad &#171;$(command)&#187; nebo `command`). Nov\u00e1 implementace vyu\u017e\u00edv\u00e1 rekurzivn\u00ed vol\u00e1n\u00ed parseru Bison a vynik\u00e1 kvalitn\u011bj\u0161\u00edm syntaktick\u00fdm ov\u011b\u0159ov\u00e1n\u00edm a v\u010dasn\u00fdm odhalen\u00edm chyb v substitu\u010dn\u00edch konstrukc\u00edch.\n<li class=\"l\"> Bylo vylep\u0161eno zpracov\u00e1n\u00ed a rozbalen\u00ed index\u016f pol\u00ed. Byla implementov\u00e1na mo\u017enost pou\u017eit\u00ed parametr\u016f &#171;@&#187; a &#171;*&#187; ve vestav\u011bn\u00e9m p\u0159\u00edkazu unset pro resetov\u00e1n\u00ed kl\u00ed\u010de se zadanou hodnotou m\u00edsto resetov\u00e1n\u00ed cel\u00e9ho pole.\n<li class=\"l\"> Byla p\u0159id\u00e1na nov\u00e1 nastaven\u00ed &#171;patsub_replacement&#187;, p\u0159i jeho\u017e aktivaci se symbol &#171;&#038;&#187; v nahrazovan\u00e9m \u0159et\u011bzci pou\u017e\u00edv\u00e1 pro vlo\u017een\u00ed \u010d\u00e1sti \u0159et\u011bzce odpov\u00eddaj\u00edc\u00ed zadan\u00e9mu vzoru. Pro vlo\u017een\u00ed liter\u00e1lu &#171;&#038;&#187; je nutn\u00e9 jeho escape pomoc\u00ed zp\u011btn\u00e9ho lom\u00edtka.\n<li class=\"l\"> Byl roz\u0161\u00ed\u0159en po\u010det situac\u00ed, kdy nedoch\u00e1z\u00ed k odv\u011btven\u00ed dal\u0161\u00edch proces\u016f, nap\u0159\u00edklad fork se nyn\u00ed nepou\u017e\u00edv\u00e1 p\u0159i pou\u017eit\u00ed konstrukce &#171;$(&lt;file)&#187;.\n<li class=\"l\"> Byl zaveden nov\u00fd intern\u00ed r\u00e1mec pro \u010dasov\u00e1n\u00ed a v\u00fdpo\u010dty timeout\u016f.\n<li class=\"l\"> Byla poskytnuta mo\u017enost aktivace alternativn\u00ed implementace pol\u00ed b\u011bhem f\u00e1ze sestaven\u00ed (configure &#8212;enable-alt-array-implementation), kter\u00e1 je optimalizov\u00e1na pro maxim\u00e1ln\u00ed rychlost p\u0159\u00edstupu s vy\u0161\u0161\u00edmi n\u00e1roky na pam\u011b\u0165.\n<li class=\"l\"> Bylo roz\u0161\u00ed\u0159eno pou\u017eit\u00ed substituc\u00ed $&#8217;&#8230;&#8217; a $&#187;&#8230;&#187;, kter\u00e9 se pou\u017e\u00edvaj\u00ed p\u0159i lokalizaci. Byla p\u0159id\u00e1na nastavovac\u00ed volba noexpand_translations a skladovac\u00ed volba &#171;configure &#8212;enable-translatable-strings&#187;, kter\u00e9 \u0159\u00edd\u00ed aktivaci podpory lokalizovan\u00fdch substituc\u00ed $&#187;&#8230;&#187;.\n<li class=\"l\"> Bylo p\u0159id\u00e1no a ve v\u00fdchoz\u00edm nastaven\u00ed zapnuto nastaven\u00ed &#171;globskipdots&#187;, kter\u00e9 zakazuje vracen\u00ed &#171;.&#187; a &#171;..&#187; p\u0159i rozbalov\u00e1n\u00ed cest.            <\/ul>\n<p>Zdroj: <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 5.0.3 - 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 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