{"id":138764,"date":"2025-07-06T17:12:03","date_gmt":"2025-07-06T15:12:03","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/reliz-komandnoj-obolochki-bash-5-3"},"modified":"2025-07-06T17:12:03","modified_gmt":"2025-07-06T15:12:03","slug":"reliz-komandnoj-obolochki-bash-5-3","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sk\/blog\/news\/reliz-komandnoj-obolochki-bash-5-3","title":{"rendered":"Uvo\u013enenie pr\u00edkazov\u00e9ho shellu Bash 5.3","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Po takmer troch rokoch v\u00fdvoja bola zverejnen\u00e1 nov\u00e1 verzia pr\u00edkazov\u00e9ho interpretera GNU Bash 5.3, ktor\u00fd sa pou\u017e\u00edva ako predvolen\u00fd v v\u00e4\u010d\u0161ine distrib\u00faci\u00ed Linuxu. S\u00fa\u010dasne bol vydan\u00fd aj release kni\u017enice readline 8.3, ktor\u00e1 sa pou\u017e\u00edva v bashi na organizovanie edit\u00e1cie pr\u00edkazov\u00e9ho riadku.    <\/p>\n<p>Medzi k\u013e\u00fa\u010dov\u00e9 vylep\u0161enia patr\u00ed:  <\/p>\n<ul>\n<li class=\"l\"> Realizovan\u00e9 nov\u00e9 formy substit\u00facie pr\u00edkazov &#171;${ command; }&#187; a &#171;${|command;}&#187;, ktor\u00e9 umo\u017e\u0148uj\u00fa zachyti\u0165 v\u00fdstup pr\u00edkazu bez vytvorenia samostatn\u00e9ho podriaden\u00e9ho procesu a bez pou\u017eitia anonymn\u00fdch kan\u00e1lov. V\u00fdsledky vykonania pr\u00edkazu s\u00fa odovzd\u00e1van\u00e9 ako v\u00fdsledok substit\u00facie alebo zapisovan\u00e9 do premennej REPLY.\n<li class=\"l\"> Pridan\u00e1 nov\u00e1 premenn\u00e1 GLOBSORT, ktor\u00e1 ur\u010duje sp\u00f4sob triedenia pri doplnen\u00ed s\u00faborovej cesty. Napr\u00edklad, m\u00f4\u017eete si zvoli\u0165 triedenie pod\u013ea n\u00e1zvu (GLOBSORT=name), ve\u013ekosti (GLOBSORT=size) alebo \u010dasu zmeny (GLOBSORT=mtime), a taktie\u017e ur\u010di\u0165 priamy (od men\u0161ieho k v\u00e4\u010d\u0161iemu) alebo opa\u010dn\u00fd (od v\u00e4\u010d\u0161ieho k men\u0161iemu) poriadok triedenia (napr\u00edklad, pri &#171;GLOBSORT=-size&#187; sa najprv zobrazia najv\u00e4\u010d\u0161ie s\u00fabory).\n<li class=\"l\"> Do vstavanej pr\u00edkazovej funkcie &#171;compgen&#187; bola pridan\u00e1 vo\u013eba &#171;-V varname&#187; na ulo\u017eenie generovan\u00fdch doplnen\u00ed do premennej, namiesto v\u00fdstupu na \u0161tandardn\u00fd pr\u00fad.\n<li class=\"l\"> Do vstavenej pr\u00edkazovej funkcie &#171;read&#187; bola pridan\u00e1 vo\u013eba &#171;-E&#187;, ktor\u00e1 pri vstupe \u00fadajov vyu\u017e\u00edva kni\u017enicu readline s pravidlami autocompletion pre kon\u0161trukcie bash.\n<li class=\"l\"> Do vstavenej pr\u00edkazovej funkcie &#171;source&#187; bola pridan\u00e1 vo\u013eba &#171;-p PATH&#187;, ktor\u00e1 umo\u017e\u0148uje predefinova\u0165 zoznam h\u013eadania v s\u00faborov\u00fdch cest\u00e1ch (uveden\u00e1 hodnota sa pou\u017e\u00edva namiesto premennej $PATH).\n<li class=\"l\"> Zdrojov\u00fd k\u00f3d bol prelo\u017een\u00fd na pou\u017e\u00edvanie \u0161tandardu C23. Bolo zastaven\u00e9 umo\u017enenie zostavovania kompil\u00e1tormi v re\u017eime &#171;K&#038;R C&#187; (\u0161t\u00fdl zodpovedaj\u00faci popisu programovacieho jazyka C v knihe &#171;The C Programming Language&#187; od Kernighana a Ritchieho).\n<li class=\"l\"> Vo vstavenej pr\u00edkazovej funkcii &#171;umask&#187; bola zabezpe\u010den\u00e1 \u00fapln\u00e1 kompatibilita so \u0161pecifik\u00e1ciami POSIX.\n<li class=\"l\"> Pridan\u00e1 na\u010d\u00edtava\u010d pr\u00edkazu &#171;kv&#187;, ktor\u00fd vytv\u00e1ra asociat\u00edvne pole na z\u00e1klade d\u00e1t v form\u00e1te &#171;k\u013e\u00fa\u010d hodnota&#187;.\n<li class=\"l\"> Pridan\u00e1 na\u010d\u00edtava\u010d pr\u00edkazu &#171;strptime&#187;, ktor\u00fd prev\u00e1dza textov\u00fa reprezent\u00e1ciu d\u00e1tumu a \u010dasu na epoch\u00e1lne \u010das (\u010d\u00edslo sek\u00fand od 1. janu\u00e1ra 1970).\n<li class=\"l\"> Pridan\u00e1 na\u010d\u00edtava\u010d pr\u00edkazu &#171;fltexpr&#187;, ktor\u00fd umo\u017e\u0148uje vykon\u00e1va\u0165 aritmetick\u00e9 oper\u00e1cie s pl\u00e1vaj\u00facou desatinnou \u010diarkou analogicky s pr\u00edkazom let.\n<li class=\"l\"> Pridan\u00e1 dynamicky nastavovan\u00e1 premenn\u00e1 BASH_MONOSECONDS, ktor\u00e1 obsahuje aktu\u00e1lnu hodnotu syst\u00e9mov\u00fdch monot\u00f3nnych hod\u00edn, ktor\u00e9 sa nepretr\u017eite zvy\u0161uj\u00fa, aj ke\u010f sa \u010das posunie sp\u00e4\u0165.\n<li class=\"l\"> V re\u017eime POSIX porovnanie re\u0165azcov v pr\u00edkaze &#171;test&#187;, pri pou\u017eit\u00ed oper\u00e1torov &#171;&lt;&#187; a &#171;&gt;&#187;, sa teraz vykon\u00e1va s oh\u013eadom na aktu\u00e1lnu lokalitu.\n<li class=\"l\"> V pr\u00edkaze &#171;bind -x&#187; je povolen\u00e9 odde\u013eova\u0165 kl\u00e1vesy a volan\u00e9 pr\u00edkazy medzerou, ak je sekvencia uzavret\u00e1 v \u00favodzovk\u00e1ch.\n<li class=\"l\"> V novej verzii Readline bola pridan\u00e1 mo\u017enos\u0165 &#171;search-ignore-case&#187; na vyh\u013ead\u00e1vanie v hist\u00f3rii bez oh\u013eadu na ve\u013ekos\u0165 p\u00edsmen. Bola pridan\u00e1 pr\u00edkaz &#171;export-completions&#187; na exportovanie n\u00e1vrhov na doplnenie slova na spracovanie v in\u00fdch procesoch. Bola pridan\u00e1 pr\u00edkaz &#171;execute-named-command&#187; na vykonanie pr\u00edkazu, ktor\u00e9ho n\u00e1zov bol z\u00edskan\u00fd zo \u0161tandardn\u00e9ho vstupu.      <\/ul>\n<p>Zdroj: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=63532\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u043e\u0441\u043b\u0435 \u043f\u043e\u0447\u0442\u0438 \u0442\u0440\u0451\u0445 \u043b\u0435\u0442 \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 5.3, \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 8.3, \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: \u0420\u0435\u0430\u043b\u0438\u0437\u043e\u0432\u0430\u043d\u044b \u043d\u043e\u0432\u044b\u0435 \u0444\u043e\u0440\u043c\u044b \u043f\u043e\u0434\u0441\u0442\u0430\u043d\u043e\u0432\u043a\u0438 \u043a\u043e\u043c\u0430\u043d\u0434 &#171;${ command; }&#187; \u0438 &#171;${|command;}&#187;, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0438\u0435 \u043f\u0435\u0440\u0435\u0445\u0432\u0430\u0442\u0438\u0442\u044c \u0432\u044b\u0432\u043e\u0434 \u043a\u043e\u043c\u0430\u043d\u0434\u044b \u0431\u0435\u0437 \u043e\u0442\u0432\u0435\u0442\u0432\u043b\u0435\u043d\u0438\u044f [&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-138764","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.4 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041f\u043e\u0441\u043b\u0435 \u043f\u043e\u0447\u0442\u0438 \u0442\u0440\u0451\u0445 \u043b\u0435\u0442 \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 5.3, 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