{"id":75250,"date":"2020-03-24T19:42:19","date_gmt":"2020-03-24T17:42:19","guid":{"rendered":"https:\/\/prohoster.info\/blog\/administrirovanie\/obsuzhdenie-standartnye-unix-utility-kotorye-malo-kto-ispolzoval-i-ispolzuet-sejchas"},"modified":"2020-03-24T19:42:19","modified_gmt":"2020-03-24T17:42:19","slug":"obsuzhdenie-standartnye-unix-utility-kotorye-malo-kto-ispolzoval-i-ispolzuet-sejchas","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sv\/blog\/administrirovanie\/obsuzhdenie-standartnye-unix-utility-kotorye-malo-kto-ispolzoval-i-ispolzuet-sejchas","title":{"rendered":"Diskussion: standard UNIX-verktyg som f\u00e5 har anv\u00e4nt och som knappt anv\u00e4nds idag","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>F\u00f6r en vecka sedan diskuterade Douglas McIlroy, utvecklaren av UNIX-r\u00f6ret och skaparen av begreppet \"komponentbaserad programmering\", <noindex><a rel=\"nofollow\" href=\"https:\/\/minnie.tuhs.org\/pipermail\/tuhs\/2020-March\/020664.html\">ber\u00e4ttade<\/a><\/noindex> intressanta och ovanliga UNIX-program som inte f\u00e5tt stort genomslag. Publikationen satte ig\u00e5ng en aktiv diskussion p\u00e5 Hacker News. Vi har samlat det mest intressanta och vi ser fram emot att du ansluter dig till diskussionen.<\/p>\n<p><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/1cloud\/blog\/493718\/\"><img decoding=\"async\" alt=\"Diskussion: standard UNIX-verktyg som f\u00e5 har anv\u00e4nt och som knappt anv\u00e4nds idag\" src=\"\/wp-content\/uploads\/2020\/03\/718c9fbcd3e2608b4079aa16e0ccf7f7.png\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><br \/>\n<i>Foto \u2014 <noindex><a rel=\"nofollow\" href=\"https:\/\/unsplash.com\/photos\/QmNnZj_Ok-M\">Virginia Johnson<\/a><\/noindex> \u2014 Unsplash<\/i><\/p>\n<h2>Arbeta med text<\/h2>\n<p>\nI UNIX-liknande operativsystem finns det en standardupps\u00e4ttning verktyg f\u00f6r textformatering. Verktyget <b><i>typo<\/i><\/b> gjorde det m\u00f6jligt att granska dokument f\u00f6r stavfel och <noindex><a rel=\"nofollow\" href=\"https:\/\/ru.wikipedia.org\/wiki\/%D0%93%D0%B0%D0%BF%D0%B0%D0%BA%D1%81\">hapax<\/a><\/noindex> \u2014 ord som f\u00f6rekommer endast en g\u00e5ng i materialet. Intressant nog anv\u00e4nder programmet <noindex><a rel=\"nofollow\" href=\"http:\/\/man.cat-v.org\/unix-6th\/1\/typo\">inte<\/a><\/noindex> ordlistor. Det \u00e4r helt och h\u00e5llet baserat p\u00e5 informationen i filen och utf\u00f6r frekvensanalys av trigram (en sekvens av tre tecken). Alla n\u00f6dv\u00e4ndiga r\u00e4knare <noindex><a rel=\"nofollow\" href=\"https:\/\/minnie.tuhs.org\/pipermail\/tuhs\/2020-March\/020664.html\">lagras<\/a><\/noindex> i en 26x26x26-matris. Enligt Douglas McIlroy r\u00e4ckte det h\u00e4r minnet knappt till f\u00f6r n\u00e5gra enbyte r\u00e4knare. F\u00f6r att spara minne skrev de dem i logaritmisk form.<\/p>\n<p>Idag har typo ersatts av mer moderna och exakta stavningskontrollprogram baserade p\u00e5 ordlistor. Men verktyget \u00e4r fortfarande ih\u00e5gkommet \u2014 f\u00f6r n\u00e5gra \u00e5r sedan skapade en entusiast <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/robpike\/typo\">\u00e5r<\/a><\/noindex> en implementation av typo i Go. Repositoriet uppdateras fortfarande.<\/p>\n<p>Ett annat verktyg f\u00f6r dokumentarbete fr\u00e5n 80-talet \u00e4r paketet <b><i>Writer&#8217;s Workbench<\/i><\/b> fr\u00e5n Lorinda Cherry och Nina McDonald vid Bell Labs. Det inneh\u00f6ll <noindex><a rel=\"nofollow\" href=\"https:\/\/en.wikipedia.org\/wiki\/Writer%27s_Workbench#Package_contents\">verktyg f\u00f6r att identifiera delar av tal och stil i dokument, samt f\u00f6r att hitta tautologier och \u00f6verdrivet komplexa meningar. Verktygen utvecklades som st\u00f6d f\u00f6r studenter, och en tid anv\u00e4ndes de av<\/a><\/noindex> studenter vid Colorado State University i USA. Men vid tidpunkten f\u00f6r b\u00f6rjan av 90-talet hade Writer\u2019s Workbench gl\u00f6mts bort, eftersom det inte ingick i Version 7 Unix. Men det h\u00e4r verktyget fortsatte sin v\u00e4g med efterliknare \u2014 till exempel, <noindex><a rel=\"nofollow\" href=\"https:\/\/bit.ly\/2U9mSjT\">anv\u00e4ndes<\/a><\/noindex> \u0443\u0447\u0430\u0449\u0438\u0435\u0441\u044f \u0413\u043e\u0441\u0443\u0434\u0430\u0440\u0441\u0442\u0432\u0435\u043d\u043d\u043e\u0433\u043e \u0443\u043d\u0438\u0432\u0435\u0440\u0441\u0438\u0442\u0435\u0442\u0430 \u041a\u043e\u043b\u043e\u0440\u0430\u0434\u043e \u0432 \u0421\u0428\u0410. \u041d\u043e \u043a \u043d\u0430\u0447\u0430\u043b\u0443 \u0434\u0435\u0432\u044f\u043d\u043e\u0441\u0442\u044b\u0445 \u043e Writer&#8217;s Workbench \u043f\u043e\u0437\u0430\u0431\u044b\u043b\u0438, \u043f\u043e\u0442\u043e\u043c\u0443 \u0447\u0442\u043e \u0435\u0433\u043e \u043d\u0435 \u0432\u043a\u043b\u044e\u0447\u0438\u043b\u0438 \u0432 Version 7 Unix. \u041e\u0434\u043d\u0430\u043a\u043e \u044d\u0442\u043e\u0442 \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442 \u043f\u0440\u043e\u0434\u043e\u043b\u0436\u0438\u043b \u0434\u043e\u0440\u043e\u0433\u0443 \u043f\u043e\u0434\u0440\u0430\u0436\u0430\u0442\u0435\u043b\u044f\u043c \u2014 \u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, <noindex><a rel=\"nofollow\" href=\"https:\/\/en.wikipedia.org\/wiki\/Grammatik\">f\u00f6r IBM PC.<\/a><\/noindex> Det finns \u00e4ven standardverktyg i UNIX som f\u00f6renklar arbetet med formler. Det finns en preprocessorer f\u00f6r att formatera matematiska uttryck<\/p>\n<p>eqn <b><i>eqn<\/i><\/b>. Den \u00e4r anm\u00e4rkningsv\u00e4rd eftersom det f\u00f6r att visa formeln r\u00e4cker med att utvecklaren beskriver den med enkla ord och symboler. Nyckelorden g\u00f6r det m\u00f6jligt att justera matematiska tecken vertikalt och horisontellt, \u00e4ndra deras storlek och andra parametrar. Om man skickar en str\u00e4ng till verktyget:<\/p>\n<pre><code class=\"bash\">sum from { k = 1 } to N { k sup 2 }<\/code><\/pre>\n<p>\nUtdata kommer att generera f\u00f6ljande formel:<\/p>\n<p><img decoding=\"async\" alt=\"Diskussion: standard UNIX-verktyg som f\u00e5 har anv\u00e4nt och som knappt anv\u00e4nds idag\" src=\"\/wp-content\/uploads\/2020\/03\/afa0c33387f077ea8540be7961dd741d.png\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p>\nUnder 1980-1990-talet eqn <noindex><a rel=\"nofollow\" href=\"https:\/\/news.ycombinator.com\/item?id=22582548\">hj\u00e4lpte<\/a><\/noindex> IT-specialister att skriva manualer f\u00f6r mjukvaran. Men senare ersattes den av systemet LaTeX, vilket <noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/docs\/help\/posts\/#allowed_tags_formulae\">anv\u00e4nder<\/a><\/noindex> \u00e4ven Habr. Men eqn \u00e4r det f\u00f6rsta verktyget av detta slag som fortfarande \u00e4r en del av UNIX-liknande OS.<\/p>\n<h2>Arbete med filer<\/h2>\n<p>\nI det tematiska tr\u00e5den noterade medlemmarna p\u00e5 Hacker News flera s\u00e4llan anv\u00e4nda verktyg f\u00f6r att arbeta med filer. Ett av dem <noindex><a rel=\"nofollow\" href=\"https:\/\/news.ycombinator.com\/item?id=22583046\">en<\/a><\/noindex> <b><i>comm<\/i><\/b> f\u00f6r deras j\u00e4mf\u00f6relse. Det \u00e4r en f\u00f6renklad motsvarighet <noindex><a rel=\"nofollow\" href=\"https:\/\/ru.wikipedia.org\/wiki\/Diff\">diff<\/a><\/noindex>, anpassad f\u00f6r att fungera i skript. Den <noindex><a rel=\"nofollow\" href=\"https:\/\/linux.die.net\/man\/1\/comm\">skrev<\/a><\/noindex> sj\u00e4lv Richard Stallman tillsammans med David MacKenzie.<\/p>\n<p>Programmets utdata best\u00e5r av tre kolumner. I den f\u00f6rsta kolumnen hamnar v\u00e4rden som \u00e4r unika f\u00f6r den f\u00f6rsta filen, i den andra \u2014 unika f\u00f6r den andra filen. Tredje kolumnen inneh\u00e5ller gemensamma v\u00e4rden. F\u00f6r att comm ska fungera korrekt m\u00e5ste de j\u00e4mf\u00f6rda dokumenten vara lexikaliskt sorterade. D\u00e4rf\u00f6r f\u00f6reslog en av medlemmarna p\u00e5 plattformen <noindex><a rel=\"nofollow\" href=\"https:\/\/news.ycombinator.com\/item?id=22583686\">f\u00f6reslog<\/a><\/noindex> att arbeta med verktyget i f\u00f6ljande form:<\/p>\n<pre><code class=\"bash\">comm &lt;(sort fileA.txt) &lt;(sort fileB.txt)<\/code><\/pre>\n<p>\nComm \u00e4r praktiskt att anv\u00e4nda f\u00f6r att kontrollera stavningen av ord. Det r\u00e4cker att j\u00e4mf\u00f6ra dem med ett referensdokument \u2013 en ordlista. Med tanke p\u00e5 detaljerna kring behovet av att sortera filer finns det <noindex><a rel=\"nofollow\" href=\"https:\/\/web.archive.org\/web\/20090402013730\/http:\/apicom.org.ua\/blog\/2009\/02\/16\/komanda-comm\/\">en \u00e5sikt<\/a><\/noindex>, att Stallman och MacKenzie skrev sitt verktyg uteslutande f\u00f6r detta anv\u00e4ndningsfall.<\/p>\n<p><img decoding=\"async\" alt=\"Diskussion: standard UNIX-verktyg som f\u00e5 har anv\u00e4nt och som knappt anv\u00e4nds idag\" src=\"\/wp-content\/uploads\/2020\/03\/ad90deb64ab4fd2215cd0c47299102eb.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Foto \u2014 <noindex><a rel=\"nofollow\" href=\"https:\/\/unsplash.com\/photos\/VB1XqDcp6sc\">Marnix Hogendoorn<\/a><\/noindex> \u2014 Unsplash<\/i><\/p>\n<p>\u00c4ven deltagare i diskussionen p\u00e5 HN <noindex><a rel=\"nofollow\" href=\"https:\/\/news.ycombinator.com\/item?id=22583803\">en av volont\u00e4rerna som st\u00f6djer den ryska lokalisationen noterade<\/a><\/noindex> m\u00f6jligheterna med operatorn <i><b>paste<\/b><\/i>, som var oklara f\u00f6r honom. Den g\u00f6r det m\u00f6jligt att v\u00e4xla mellan datastreams eller dela en stream i tv\u00e5 kolumner vid utdata:<\/p>\n<pre><code class=\"bash\">$ paste &lt;( echo -e 'foonbar' ) &lt;( echo -e 'baznqux' )\nfoo     baz\nbar     qux\n$ echo -e 'foonbarnbaznqux' | paste - -\nfoo     bar\nbaz     qux\n<\/code><\/pre>\n<p>\nEn av anv\u00e4ndarna <noindex><a rel=\"nofollow\" href=\"https:\/\/news.ycombinator.com\/item?id=22585103\">AEP<\/a><\/noindex>, att man ofta anv\u00e4nder inte helt optimala l\u00f6sningar f\u00f6r att utf\u00f6ra dessa enkla operationer: allt fr\u00e5n <noindex><a rel=\"nofollow\" href=\"https:\/\/ru.wikipedia.org\/wiki\/Fmt\">fmt<\/a><\/noindex>, <noindex><a rel=\"nofollow\" href=\"https:\/\/ru.wikipedia.org\/wiki\/Ex_(Unix)\">ex<\/a><\/noindex> och slutar med <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/johnkerl\/miller\">mlr<\/a><\/noindex> med <noindex><a rel=\"nofollow\" href=\"http:\/\/www.nsc.ru\/cgi-bin\/www\/unix_help\/unix-man?jot\">jot<\/a><\/noindex> och <noindex><a rel=\"nofollow\" href=\"https:\/\/www.freebsd.org\/cgi\/man.cgi?query=rs&amp;sektion=1&amp;apropos=0&amp;manpath=freebsd\">rs<\/a><\/noindex>.<\/p>\n<p><i>Vilka standardm\u00f6jligheter i UNIX-liknande operativsystem har varit en \u00f6gon\u00f6ppnare f\u00f6r dig?<\/i><\/p>\n<blockquote><p><b>Vad skriver vi om i v\u00e5r f\u00f6retagsblogg:<\/b><\/p>\n<p><img decoding=\"async\" alt=\"Diskussion: standard UNIX-verktyg som f\u00e5 har anv\u00e4nt och som knappt anv\u00e4nds idag\" src=\"\/wp-content\/uploads\/2020\/03\/db0656feed61e91b940671b37ab5f985.png\" style=\"display:block;margin: 0 auto;\" \/> <noindex><a rel=\"nofollow\" href=\"https:\/\/1cloud.ru\/blog\/era-arpanet?utm_source=habrahabr&amp;utm_medium=cpm&amp;utm_campaign=unixtools&amp;utm_content=blog\">Hur dom\u00e4nnamnssystemet utvecklades: ARPANET-eran<\/a><\/noindex><br \/>\n<img decoding=\"async\" alt=\"Diskussion: standard UNIX-verktyg som f\u00e5 har anv\u00e4nt och som knappt anv\u00e4nds idag\" src=\"\/wp-content\/uploads\/2020\/03\/63e6e0e03ebc4a3e19021bc3b0d2056b.png\" style=\"display:block;margin: 0 auto;\" \/> <noindex><a rel=\"nofollow\" href=\"https:\/\/1cloud.ru\/blog\/pervie-dns-serveri?utm_source=habrahabr&amp;utm_medium=cpm&amp;utm_campaign=unixtools&amp;utm_content=blog\">Historien om dom\u00e4nnamnssystemet: de f\u00f6rsta DNS-servrarna<\/a><\/noindex><br \/>\n<img decoding=\"async\" alt=\"Diskussion: standard UNIX-verktyg som f\u00e5 har anv\u00e4nt och som knappt anv\u00e4nds idag\" src=\"\/wp-content\/uploads\/2020\/03\/b6f82ebfbd4f15956665983a173f3918.png\" style=\"display:block;margin: 0 auto;\" \/> <noindex><a rel=\"nofollow\" href=\"https:\/\/1cloud.ru\/blog\/platnie-dns-imena?utm_source=habrahabr&amp;utm_medium=cpm&amp;utm_campaign=unixtools&amp;utm_content=blog\">Historien om DNS: n\u00e4r dom\u00e4nnamn blev betalbara<\/a><\/noindex><br \/>\n<img decoding=\"async\" alt=\"Diskussion: standard UNIX-verktyg som f\u00e5 har anv\u00e4nt och som knappt anv\u00e4nds idag\" src=\"\/wp-content\/uploads\/2020\/03\/a275e20583822938ec87cf580228dce6.png\" style=\"display:block;margin: 0 auto;\" \/> <noindex><a rel=\"nofollow\" href=\"https:\/\/1cloud.ru\/blog\/voini-protokolov-dns?utm_source=habrahabr&amp;utm_medium=cpm&amp;utm_campaign=unixtools&amp;utm_content=blog\">Historien om dom\u00e4nnamnssystemet: \"protokollens krig\"<\/a><\/noindex><\/p><\/blockquote>\n<p>K\u00e4lla: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/1cloud\/blog\/493718\/\">habr.com<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041d\u0435\u0434\u0435\u043b\u044e \u043d\u0430\u0437\u0430\u0434 \u0414\u0443\u0433\u043b\u0430\u0441 \u041c\u0430\u043a\u0438\u043b\u0440\u043e\u0439 (Douglas McIlroy), \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a \u043a\u043e\u043d\u0432\u0435\u0439\u0435\u0440\u0430 UNIX \u0438 \u0430\u0432\u0442\u043e\u0440 \u043f\u043e\u043d\u044f\u0442\u0438\u044f \u00ab\u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u043d\u043e-\u043e\u0440\u0438\u0435\u043d\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0435 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435\u00bb, \u0440\u0430\u0441\u0441\u043a\u0430\u0437\u0430\u043b \u043e\u0431 \u0438\u043d\u0442\u0435\u0440\u0435\u0441\u043d\u044b\u0445 \u0438 \u043d\u0435\u043e\u0431\u044b\u0447\u043d\u044b\u0445 UNIX-\u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u0430\u0445, \u043d\u0435 \u043d\u0430\u0448\u0435\u0434\u0448\u0438\u0445 \u0448\u0438\u0440\u043e\u043a\u043e\u0433\u043e \u043f\u0440\u0438\u043c\u0435\u043d\u0435\u043d\u0438\u044f. \u041f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u044f \u0437\u0430\u043f\u0443\u0441\u0442\u0438\u043b\u0430 \u0430\u043a\u0442\u0438\u0432\u043d\u043e\u0435 \u043e\u0431\u0441\u0443\u0436\u0434\u0435\u043d\u0438\u0435 \u043d\u0430 Hacker News. \u041c\u044b \u0441\u043e\u0431\u0440\u0430\u043b\u0438 \u0441\u0430\u043c\u043e\u0435 \u0438\u043d\u0442\u0435\u0440\u0435\u0441\u043d\u043e\u0435 \u0438 \u0431\u0443\u0434\u0435\u043c \u0440\u0430\u0434\u044b, \u0435\u0441\u043b\u0438 \u0432\u044b \u043f\u0440\u0438\u0441\u043e\u0435\u0434\u0438\u043d\u0438\u0442\u0435\u0441\u044c \u043a \u0434\u0438\u0441\u043a\u0443\u0441\u0441\u0438\u0438. \u0424\u043e\u0442\u043e \u2014 Virginia Johnson \u2014 Unsplash \u0420\u0430\u0431\u043e\u0442\u0430 \u0441 \u0442\u0435\u043a\u0441\u0442\u043e\u043c \u0412 UNIX-\u043f\u043e\u0434\u043e\u0431\u043d\u044b\u0445 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u044b\u0445 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":75251,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-75250","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-administrirovanie"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.4 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041d\u0435\u0434\u0435\u043b\u044e \u043d\u0430\u0437\u0430\u0434 \u0414\u0443\u0433\u043b\u0430\u0441 \u041c\u0430\u043a\u0438\u043b\u0440\u043e\u0439 (Douglas McIlroy), \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a \u043a\u043e\u043d\u0432\u0435\u0439\u0435\u0440\u0430 UNIX \u0438 \u0430\u0432\u0442\u043e\u0440 \u043f\u043e\u043d\u044f\u0442\u0438\u044f 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