{"id":3554,"date":"2017-05-10T17:17:04","date_gmt":"2017-05-10T14:17:04","guid":{"rendered":"https:\/\/www.limonhost.net\/makaleler\/?p=3554"},"modified":"2021-02-12T23:02:36","modified_gmt":"2021-02-12T20:02:36","slug":"crontab-nedir-nasil-kullanilir","status":"publish","type":"post","link":"https:\/\/www.limonhost.net\/makaleler\/nasil-yaparim\/crontab-nedir-nasil-kullanilir\/","title":{"rendered":"Crontab Nedir? Nas\u0131l Kullan\u0131l\u0131r?"},"content":{"rendered":"<p>Yaz\u0131l\u0131m ortamlar\u0131n\u0131 kuran ve bak\u0131m\u0131n\u0131 yapan ki\u015filer belirli saatlerde, tarihlerde veya aral\u0131klarla periyodik olarak \u00e7al\u0131\u015fmak i\u00e7in i\u015fleri (komutlar veya kabuk komut dosyalar\u0131) zamanlamak i\u00e7in crontab kullan\u0131r. Genel ama\u00e7l\u0131 niteli\u011fi Internet&#8217;ten dosya indirmek ve d\u00fczenli aral\u0131klarla e-posta indirmek gibi i\u015fler i\u00e7in kullan\u0131\u015fl\u0131 olmas\u0131na ra\u011fmen, sistemin bak\u0131m\u0131n\u0131 veya y\u00f6netimini otomatikle\u015ftirir. Crontab, tekrarlayan g\u00f6revleri zamanlamak otomatize etmek i\u00e7in en uygun \u00e7\u00f6z\u00fcmd\u00fcr. Bir kerelik g\u00f6revlerin planlanmas\u0131, genellikle yard\u0131mc\u0131 program\u0131n\u0131 kullanarak daha kolayd\u0131r.<!--more--><\/p>\n<p>Crontab, belli bir programda periyodik olarak \u00e7al\u0131\u015ft\u0131r\u0131lacak kabuk komutlar\u0131n\u0131 belirten bir yap\u0131land\u0131rma dosyas\u0131 olan bir crontab (cron tablo) dosyas\u0131 taraf\u0131ndan y\u00f6nlendirilir. Crontab dosyalar\u0131, i\u015f listelerinin ve di\u011fer talimatlar\u0131n tutuldu\u011fu yerde saklan\u0131r. Kullan\u0131c\u0131lar kendi bireysel crontab dosyalar\u0131na sahip olabilirler ve yaln\u0131zca sistem y\u00f6neticilerinin d\u00fczenleyebilece\u011fi bir sistem \u00e7ap\u0131nda crontab dosyas\u0131 (genellikle \/etc veya \/home\/kullaniciadi\/etc alt dizini) bulunur.<\/p>\n<p>Crontab ile a\u015fa\u011f\u0131daki gibi i\u015flemleri yapabiliriz:<\/p>\n<ul>\n<li>Belirli saatler i\u00e7erisinde bir URI \u00fczerinden otomatik dosya indirme i\u015flemi<\/li>\n<li>Sistem \u00fczerinde bulunan ve daha \u00f6nceden belirlenen klas\u00f6rlerin yedeklerini almak<\/li>\n<li>Yedekleri al\u0131nan dosyalar\u0131n bir ba\u015fka uzak sunucuya kopyalanmas\u0131 (replike edilmesi)<\/li>\n<li>Her g\u00fcn belirli saatlerde sunucu \u00fczerinden e-posta g\u00f6nderimi yapmak gibi g\u00f6rd\u00fc\u011f\u00fcn\u00fcz gibi<\/li>\n<\/ul>\n<h2>\u00d6rneklerle Crontab<\/h2>\n<p>Crontab&#8217;\u0131n bulundu\u011fu dosya yolu \u00e7o\u011fu zaman &#8220;\/etc\/crontab&#8221; \u015feklindedir ve $ crontab -e komutu ile otomatik olarak eri\u015filebilir. Kar\u015f\u0131m\u0131za gelecek olan ekranda basit bir text edit\u00f6r\u00fc olacakt\u0131r ve en alt sat\u0131r ise bizim i\u00e7in ayr\u0131lm\u0131\u015f durumdad\u0131r.<\/p>\n<p>\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500 dakika (0 &#8211; 59)<br \/>\n\u2502 \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500 saat (0 &#8211; 23)<br \/>\n\u2502 \u2502 \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500 takvim g\u00fcn\u00fc (1 &#8211; 31)<br \/>\n\u2502 \u2502 \u2502 \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500 ay (1 &#8211; 12)<br \/>\n\u2502 \u2502 \u2502 \u2502 \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500 g\u00fcn (0 &#8211; 6) (0=Pazar, 1=Pazartesi &#8230; 6=Cumartesi<br \/>\n\u2502 \u2502 \u2502 \u2502 \u2502\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 ve ayr\u0131ca sadece Pazar g\u00fcn\u00fc i\u00e7in 7=Pazar)<br \/>\n\u2502 \u2502 \u2502 \u2502 \u2502<br \/>\n\u2502 \u2502 \u2502 \u2502 \u2502<br \/>\n*\u00a0 *\u00a0 *\u00a0 * *\u00a0 \u00e7al\u0131\u015ft\u0131r\u0131lmak istenen komut<\/p>\n<p>Yukar\u0131daki crontab evrenseldir ve crontab \u00e7al\u0131\u015ft\u0131rmak i\u00e7in sisteminizin unix olmas\u0131 yeterlidir. \u015e\u00f6yle ki; ben her ay\u0131n ilk g\u00fcn\u00fc sabah saat 07:30&#8217;da \/home\/kullaniciadi dizinimin yede\u011fini \/yedek\/kullaniciadi klas\u00f6r\u00fcme almak istiyorum. Bunun i\u00e7in yazmam gereken komut a\u015fa\u011f\u0131ki gibi olmal\u0131d\u0131r.<\/p>\n<p><code>$ 30 07 1 1 * tar -zcvf \/yedek\/kullanici.tar.gz \/home\/kullanici.tar.gz<\/code><\/p>\n<h2>Crontab Yetkileri<\/h2>\n<p>Sistem \u00fczerinde var olan baz\u0131 kullan\u0131c\u0131lar\u0131n crontab eri\u015fimlerini tamamen k\u0131s\u0131tlayabilirsiniz ya da varsay\u0131lan olarak eri\u015fimi k\u0131s\u0131tlanm\u0131\u015f olan kullan\u0131c\u0131lar\u0131n ise crontab eri\u015fimine izin verebilirsiniz. Bu gibi durumlar i\u00e7in \/etc dizini alt\u0131nda iki adet dosya olu\u015fturmam\u0131z gerekme. Bu dosyalar ise;<\/p>\n<ul>\n<li>cron.allow<\/li>\n<li>cron.deny<\/li>\n<\/ul>\n<p>Varsay\u0131lan olarak bu iki dosya da sistem \u00fczerinde bulunmaz. Crontab eri\u015fimini k\u0131s\u0131tlamak istedi\u011finiz kullan\u0131c\u0131lar\u0131 favori text edit\u00f6r\u00fcn\u00fcz ile a\u00e7\u0131p her bir sat\u0131ra bir kullan\u0131c\u0131 ad\u0131 gelecek \u015fekilde d\u00fczenleyip kaydetmeniz yeterli olacakt\u0131r.<\/p>\n<p>Di\u011fer bir senaryoda ise, b\u00fct\u00fcn kullan\u0131c\u0131lar\u0131n crontab eri\u015fiminin olmad\u0131\u011f\u0131n\u0131 ve baz\u0131 kullan\u0131c\u0131lara ise crontab eri\u015fimi vermek istedi\u011finizi d\u00fc\u015f\u00fcnd\u00fc\u011f\u00fcm\u00fczde yine favori text edit\u00f6r\u00fcn\u00fcz ile bu sefer cron.allow dosyas\u0131n\u0131 a\u00e7\u0131p her bir sat\u0131ra bir kullan\u0131c\u0131 ad\u0131 gelecek \u015fekilde d\u00fczenleyip kaydetmeniz yeterlidir.<\/p>\n<p>Voila!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Yaz\u0131l\u0131m ortamlar\u0131n\u0131 kuran ve bak\u0131m\u0131n\u0131 yapan ki\u015filer belirli saatlerde, tarihlerde veya aral\u0131klarla periyodik olarak \u00e7al\u0131\u015fmak i\u00e7in i\u015fleri (komutlar veya kabuk komut dosyalar\u0131) zamanlamak i\u00e7in crontab kullan\u0131r. Genel ama\u00e7l\u0131 niteli\u011fi Internet&#8217;ten dosya indirmek ve d\u00fczenli aral\u0131klarla e-posta indirmek gibi i\u015fler i\u00e7in kullan\u0131\u015fl\u0131 olmas\u0131na ra\u011fmen, sistemin bak\u0131m\u0131n\u0131 veya y\u00f6netimini otomatikle\u015ftirir. Crontab, tekrarlayan g\u00f6revleri zamanlamak otomatize etmek i\u00e7in [&hellip;]<\/p>\n","protected":false},"author":7,"featured_media":3576,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[3,2],"tags":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v20.11 (Yoast SEO v21.8.1) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Crontab Nedir? Nas\u0131l Kullan\u0131l\u0131r? | LimonHost<\/title>\n<meta name=\"description\" content=\"Crontab Nedir? Nas\u0131l Kullan\u0131l\u0131r?\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.limonhost.net\/makaleler\/nasil-yaparim\/crontab-nedir-nasil-kullanilir\/\" \/>\n<meta property=\"og:locale\" content=\"tr_TR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Crontab Nedir? Nas\u0131l Kullan\u0131l\u0131r?\" \/>\n<meta property=\"og:description\" content=\"Yaz\u0131l\u0131m ortamlar\u0131 kuran ve bak\u0131m\u0131n\u0131 yapan ki\u015filer belirli saatlerde, tarihlerde veya aral\u0131klarla periyodik olarak \u00e7al\u0131\u015fmak i\u00e7in i\u015fleri (komutlar veya kabuk komut dosyalar\u0131) zamanlamak i\u00e7in crontab kullan\u0131r. Genel ama\u00e7l\u0131 niteli\u011fi Internet&#039;ten dosya indirmek ve d\u00fczenli aral\u0131klarla e-posta indirmek gibi i\u015fler i\u00e7in kullan\u0131\u015fl\u0131 olmas\u0131na ra\u011fmen, sistemin bak\u0131m\u0131n\u0131 veya y\u00f6netimini otomatikle\u015ftirir. Crontab, tekrarlayan g\u00f6revleri zamanlamak i\u00e7in en uygundur. Bir kerelik g\u00f6revlerin planlanmas\u0131, genellikle yard\u0131mc\u0131 program\u0131n\u0131 kullanarak daha kolayd\u0131r.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.limonhost.net\/makaleler\/nasil-yaparim\/crontab-nedir-nasil-kullanilir\/\" \/>\n<meta property=\"og:site_name\" content=\"Makaleler | LIMONHOST\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/tr-tr.facebook.com\/limonhosting\/\" \/>\n<meta property=\"article:published_time\" content=\"2017-05-10T14:17:04+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2021-02-12T20:02:36+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/cdn2.limonhost.net\/wp-content\/uploads\/2017\/05\/crontab.png\" \/>\n\t<meta property=\"og:image:width\" content=\"740\" \/>\n\t<meta property=\"og:image:height\" content=\"296\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"Ercan Ermis\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:title\" content=\"Crontab Nedir? Nas\u0131l Kullan\u0131l\u0131r?\" \/>\n<meta name=\"twitter:description\" content=\"Yaz\u0131l\u0131m ortamlar\u0131 kuran ve bak\u0131m\u0131n\u0131 yapan ki\u015filer belirli saatlerde, tarihlerde veya aral\u0131klarla periyodik olarak \u00e7al\u0131\u015fmak i\u00e7in i\u015fleri (komutlar veya kabuk komut dosyalar\u0131) zamanlamak i\u00e7in crontab kullan\u0131r. Genel ama\u00e7l\u0131 niteli\u011fi Internet&#039;ten dosya indirmek ve d\u00fczenli aral\u0131klarla e-posta indirmek gibi i\u015fler i\u00e7in kullan\u0131\u015fl\u0131 olmas\u0131na ra\u011fmen, sistemin bak\u0131m\u0131n\u0131 veya y\u00f6netimini otomatikle\u015ftirir. Crontab, tekrarlayan g\u00f6revleri zamanlamak i\u00e7in en uygundur. Bir kerelik g\u00f6revlerin planlanmas\u0131, genellikle yard\u0131mc\u0131 program\u0131n\u0131 kullanarak daha kolayd\u0131r.\" \/>\n<meta name=\"twitter:image\" content=\"https:\/\/www.limonhost.net\/makaleler\/wp-content\/uploads\/2017\/05\/crontab.png\" \/>\n<meta name=\"twitter:creator\" content=\"@ermisus\" \/>\n<meta name=\"twitter:site\" content=\"@limonhost\" \/>\n<meta name=\"twitter:label1\" content=\"Yazan:\" \/>\n\t<meta name=\"twitter:data1\" content=\"Ercan Ermis\" \/>\n\t<meta name=\"twitter:label2\" content=\"Tahmini okuma s\u00fcresi\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 dakika\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.limonhost.net\/makaleler\/nasil-yaparim\/crontab-nedir-nasil-kullanilir\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.limonhost.net\/makaleler\/nasil-yaparim\/crontab-nedir-nasil-kullanilir\/\"},\"author\":{\"name\":\"Ercan Ermis\",\"@id\":\"https:\/\/www.limonhost.net\/makaleler\/#\/schema\/person\/1909553edd993d189341a0a6242b87ec\"},\"headline\":\"Crontab Nedir? 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Nas\u0131l Kullan\u0131l\u0131r? | LimonHost","description":"Crontab Nedir? Nas\u0131l Kullan\u0131l\u0131r?","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.limonhost.net\/makaleler\/nasil-yaparim\/crontab-nedir-nasil-kullanilir\/","og_locale":"tr_TR","og_type":"article","og_title":"Crontab Nedir? Nas\u0131l Kullan\u0131l\u0131r?","og_description":"Yaz\u0131l\u0131m ortamlar\u0131 kuran ve bak\u0131m\u0131n\u0131 yapan ki\u015filer belirli saatlerde, tarihlerde veya aral\u0131klarla periyodik olarak \u00e7al\u0131\u015fmak i\u00e7in i\u015fleri (komutlar veya kabuk komut dosyalar\u0131) zamanlamak i\u00e7in crontab kullan\u0131r. Genel ama\u00e7l\u0131 niteli\u011fi Internet'ten dosya indirmek ve d\u00fczenli aral\u0131klarla e-posta indirmek gibi i\u015fler i\u00e7in kullan\u0131\u015fl\u0131 olmas\u0131na ra\u011fmen, sistemin bak\u0131m\u0131n\u0131 veya y\u00f6netimini otomatikle\u015ftirir. Crontab, tekrarlayan g\u00f6revleri zamanlamak i\u00e7in en uygundur. Bir kerelik g\u00f6revlerin planlanmas\u0131, genellikle yard\u0131mc\u0131 program\u0131n\u0131 kullanarak daha kolayd\u0131r.","og_url":"https:\/\/www.limonhost.net\/makaleler\/nasil-yaparim\/crontab-nedir-nasil-kullanilir\/","og_site_name":"Makaleler | LIMONHOST","article_publisher":"https:\/\/tr-tr.facebook.com\/limonhosting\/","article_published_time":"2017-05-10T14:17:04+00:00","article_modified_time":"2021-02-12T20:02:36+00:00","og_image":[{"width":740,"height":296,"url":"https:\/\/cdn2.limonhost.net\/wp-content\/uploads\/2017\/05\/crontab.png","type":"image\/png"}],"author":"Ercan Ermis","twitter_card":"summary_large_image","twitter_title":"Crontab Nedir? 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