{"id":27474,"date":"2025-08-14T00:45:21","date_gmt":"2025-08-13T21:45:21","guid":{"rendered":"https:\/\/fatihsoysal.com\/blog\/powershell-buyuk-kucuk-harfe-duyarli-olmayan-contains-kullanimi\/"},"modified":"2025-08-14T00:45:21","modified_gmt":"2025-08-13T21:45:21","slug":"powershell-buyuk-kucuk-harfe-duyarli-olmayan-contains-kullanimi","status":"publish","type":"post","link":"https:\/\/fatihsoysal.com\/blog\/powershell-buyuk-kucuk-harfe-duyarli-olmayan-contains-kullanimi\/","title":{"rendered":"PowerShell: B\u00fcy\u00fck\/K\u00fc\u00e7\u00fck Harfe Duyarl\u0131 Olmayan Contains() Kullan\u0131m\u0131"},"content":{"rendered":"<p># PowerShell&#8217;de B\u00fcy\u00fck\/K\u00fc\u00e7\u00fck Harfe Duyarl\u0131 Olmayan Contains() Nas\u0131l Kullan\u0131l\u0131r?<\/p>\n<p>PowerShell&#8217;de metin i\u015flemleri yaparken, s\u0131kl\u0131kla bir dizenin ba\u015fka bir diziyi i\u00e7erip i\u00e7ermedi\u011fini kontrol etmek ihtiyac\u0131 duyars\u0131n\u0131z.  <code class=\"language-\">-contains<\/code> operat\u00f6r\u00fc bu ama\u00e7la kullan\u0131l\u0131r, ancak varsay\u0131lan olarak b\u00fcy\u00fck\/k\u00fc\u00e7\u00fck harfe duyarl\u0131d\u0131r.  Bu durum, verilerinizde b\u00fcy\u00fck\/k\u00fc\u00e7\u00fck harf tutars\u0131zl\u0131klar\u0131 varsa sorunlara yol a\u00e7abilir. Bu makalede, PowerShell&#8217;de b\u00fcy\u00fck\/k\u00fc\u00e7\u00fck harfe duyarl\u0131 olmayan bir <code class=\"language-\">contains()<\/code> i\u015flemi nas\u0131l ger\u00e7ekle\u015ftirilece\u011fini ad\u0131m ad\u0131m \u00f6\u011frenece\u011fiz.  Ger\u00e7ek d\u00fcnya senaryolar\u0131, performans optimizasyonu ve ileri d\u00fczey teknikler ele al\u0131nacakt\u0131r.<\/p>\n<p><strong>\u00d6\u011frenme Yol Haritas\u0131<\/strong><\/p>\n<p>Bu makale, PowerShell&#8217;de b\u00fcy\u00fck\/k\u00fc\u00e7\u00fck harfe duyarl\u0131 olmayan <code class=\"language-\">contains()<\/code> i\u015flemini \u00f6\u011frenmek i\u00e7in \u00fc\u00e7 a\u015famal\u0131 bir yol haritas\u0131 sunar:<\/p>\n<p><strong>Yeni Ba\u015flayan:<\/strong>  Temel kavramlar ve basit kod \u00f6rnekleriyle ad\u0131m ad\u0131m a\u00e7\u0131klama.<\/p>\n<p><strong>Orta Seviye:<\/strong>  Ger\u00e7ek d\u00fcnya senaryolar\u0131, optimizasyon ipu\u00e7lar\u0131 ve daha karma\u015f\u0131k \u00f6rnekler.<\/p>\n<p><strong>\u0130leri Seviye:<\/strong>  Performans analizi, s\u0131n\u0131r durumlar\u0131 (edge cases) ve geli\u015fmi\u015f teknikler.<\/p>\n<p><strong>PowerShell&#8217;de Temel Metin \u0130\u015fleme ve -contains Operat\u00f6r\u00fc<\/strong><\/p>\n<p>PowerShell, metin i\u015fleme i\u00e7in g\u00fc\u00e7l\u00fc ara\u00e7lar sunar.  <code class=\"language-\">-contains<\/code> operat\u00f6r\u00fc, bir dizinin ba\u015fka bir diziyi i\u00e7erip i\u00e7ermedi\u011fini kontrol etmek i\u00e7in kullan\u0131l\u0131r.  Ancak, varsay\u0131lan olarak b\u00fcy\u00fck\/k\u00fc\u00e7\u00fck harfe duyarl\u0131d\u0131r.  \u00d6rne\u011fin:<\/p>\n<pre class=\"language-powershell\"><code>$dizi = &quot;Merhaba D\u00fcnya&quot;\n$dizi -contains &quot;merhaba&quot; # False d\u00f6nd\u00fcr\u00fcr\n$dizi -contains &quot;Merhaba&quot; # True d\u00f6nd\u00fcr\u00fcr<\/code><\/pre>\n<p>G\u00f6rd\u00fc\u011f\u00fcn\u00fcz gibi, &#8220;merhaba&#8221; k\u00fc\u00e7\u00fck harflerle yaz\u0131ld\u0131\u011f\u0131 i\u00e7in <code class=\"language-\">-contains<\/code> operat\u00f6r\u00fc <code class=\"language-\">False<\/code> d\u00f6nd\u00fcrd\u00fc.  B\u00fcy\u00fck\/k\u00fc\u00e7\u00fck harfe duyarl\u0131 olmayan bir kar\u015f\u0131la\u015ft\u0131rma i\u00e7in farkl\u0131 y\u00f6ntemler kullanmam\u0131z gerekir.<\/p>\n<p><strong>B\u00fcy\u00fck\/K\u00fc\u00e7\u00fck Harfe Duyarl\u0131 Olmayan Contains() \u0130\u015flemini Ger\u00e7ekle\u015ftirmenin Yollar\u0131: Yeni Ba\u015flayanlar \u0130\u00e7in<\/strong><\/p>\n<p>B\u00fcy\u00fck\/k\u00fc\u00e7\u00fck harfe duyarl\u0131 olmayan bir <code class=\"language-\">contains()<\/code> i\u015flemi ger\u00e7ekle\u015ftirmenin en basit yolu, <code class=\"language-\">.ToLower()<\/code> veya <code class=\"language-\">.ToUpper()<\/code> metodlar\u0131n\u0131 kullanarak her iki diziyi de ayn\u0131 b\u00fcy\u00fck\/k\u00fc\u00e7\u00fck harfe d\u00f6n\u00fc\u015ft\u00fcrmektir.<\/p>\n<pre class=\"language-powershell\"><code>$dizi = &quot;Merhaba D\u00fcnya&quot;\n($dizi.ToLower() -contains &quot;merhaba&quot;.ToLower()) # True d\u00f6nd\u00fcr\u00fcr\n($dizi.ToUpper() -contains &quot;MERHABA&quot;.ToUpper()) # True d\u00f6nd\u00fcr\u00fcr<\/code><\/pre>\n<p>Bu y\u00f6ntem, basit senaryolar i\u00e7in olduk\u00e7a etkilidir.  Ancak, b\u00fcy\u00fck miktarda veri i\u015flerken performans sorunlar\u0131na yol a\u00e7abilir.<\/p>\n<p><strong>Ger\u00e7ek D\u00fcnya \u00d6rne\u011fi ve Optimizasyon \u0130pu\u00e7lar\u0131: Orta Seviye<\/strong><\/p>\n<p>Bir log dosyas\u0131nda belirli bir hata mesaj\u0131 olup olmad\u0131\u011f\u0131n\u0131 kontrol etmek istedi\u011fimizi d\u00fc\u015f\u00fcnelim.  Hata mesaj\u0131 farkl\u0131 b\u00fcy\u00fck\/k\u00fc\u00e7\u00fck harf kombinasyonlar\u0131nda olabilir.<\/p>\n<pre class=\"language-powershell\"><code>$logDosyasi = Get-Content -Path &quot;C:\\log.txt&quot;\n$hataMesaji = &quot;Hata Kodu: 123&quot;\n\nforeach ($satir in $logDosyasi){\n  if ($satir.ToLower() -contains $hataMesaji.ToLower()){\n    Write-Host &quot;Hata mesaj\u0131 bulundu: $($satir)&quot;\n  }\n}<\/code><\/pre>\n<p>Bu kod, log dosyas\u0131ndaki her sat\u0131r\u0131 kontrol eder ve hata mesaj\u0131n\u0131 b\u00fcy\u00fck\/k\u00fc\u00e7\u00fck harfe duyars\u0131z bir \u015fekilde arar.  Ancak, b\u00fcy\u00fck log dosyalar\u0131 i\u00e7in performans d\u00fc\u015f\u00fc\u015f\u00fcne neden olabilir.  Performans\u0131 art\u0131rmak i\u00e7in <code class=\"language-\">-match<\/code> operat\u00f6r\u00fcn\u00fc kullanabiliriz:<\/p>\n<pre class=\"language-powershell\"><code>$logDosyasi = Get-Content -Path &quot;C:\\log.txt&quot;\n$hataMesaji = &quot;hata kodu: 123&quot;\n\n$logDosyasi | Where-Object {$_ -match $hataMesaji.ToLower()} | ForEach-Object {Write-Host &quot;Hata mesaj\u0131 bulundu: $_&quot;}<\/code><\/pre>\n<p><code class=\"language-\">-match<\/code> operat\u00f6r\u00fc, d\u00fczenli ifadeleri destekler ve genellikle <code class=\"language-\">-contains<\/code>&#8216;den daha h\u0131zl\u0131d\u0131r.  Ayr\u0131ca, <code class=\"language-\">Where-Object<\/code> kullanarak filtreleme i\u015flemini daha etkili hale getirebiliriz.<\/p>\n<p><strong>\u0130leri D\u00fczey Teknikler: Performans Analizi ve S\u0131n\u0131r Durumlar\u0131<\/strong><\/p>\n<p>\u00c7ok b\u00fcy\u00fck veri k\u00fcmeleriyle \u00e7al\u0131\u015f\u0131rken, performans kritik bir fakt\u00f6rd\u00fcr.  <code class=\"language-\">-match<\/code> operat\u00f6r\u00fc, <code class=\"language-\">-contains<\/code>&#8216;e g\u00f6re daha h\u0131zl\u0131 olsa da, \u00e7ok b\u00fcy\u00fck dosyalar i\u00e7in yine de yava\u015f olabilir.  Bu durumlarda,  PowerShell&#8217;in <code class=\"language-\">Select-String<\/code> cmdlet&#8217;ini kullanmak daha verimli olabilir.<\/p>\n<pre class=\"language-powershell\"><code>$logDosyasi = Get-Content -Path &quot;C:\\log.txt&quot; -Raw # T\u00fcm dosyay\u0131 tek bir string olarak okur.\n$hataMesaji = &quot;hata kodu: 123&quot;\n\nSelect-String -Path -InputObject $logDosyasi -Pattern $hataMesaji -AllMatches -CaseSensitive:$false | ForEach-Object {$_.Matches.Value}<\/code><\/pre>\n<p><code class=\"language-\">-Raw<\/code> parametresi, t\u00fcm dosyay\u0131 tek bir string olarak okur, bu da i\u015flem h\u0131z\u0131n\u0131 art\u0131r\u0131r.  <code class=\"language-\">-AllMatches<\/code> parametresi, birden fazla e\u015fle\u015fme bulursa hepsini d\u00f6nd\u00fcr\u00fcr. <code class=\"language-\">-CaseSensitive:$false<\/code> ise b\u00fcy\u00fck\/k\u00fc\u00e7\u00fck harfe duyars\u0131zl\u0131\u011f\u0131 sa\u011flar.<\/p>\n<p><strong>S\u0131n\u0131r durumlar\u0131 (Edge Cases):<\/strong>  \u00d6zel karakterler i\u00e7eren dizelerle \u00e7al\u0131\u015f\u0131rken, <code class=\"language-\">-match<\/code> operat\u00f6r\u00fcn\u00fcn d\u00fczenli ifade \u00f6zelliklerini kullanman\u0131z gerekebilir.  \u00d6rne\u011fin, nokta (.) karakteri, herhangi bir karakteri temsil eder.  Bu nedenle, nokta karakterini ar\u0131yorsan\u0131z, <code class=\"language-\">\\.<\/code> gibi escape etmeniz gerekir.<\/p>\n<p><strong>PowerShell&#8217;de B\u00fcy\u00fck\/K\u00fc\u00e7\u00fck Harfe Duyarl\u0131 Olmayan Contains() \u0130\u00e7in En \u0130yi Uygulama \u00d6nerileri<\/strong><\/p>\n<p>* <strong>Veri miktar\u0131na g\u00f6re y\u00f6ntem se\u00e7in:<\/strong> K\u00fc\u00e7\u00fck veri k\u00fcmeleri i\u00e7in <code class=\"language-\">.ToLower()<\/code>\/.ToUpper() y\u00f6ntemi yeterlidir. B\u00fcy\u00fck veri k\u00fcmeleri i\u00e7in <code class=\"language-\">-match<\/code> veya <code class=\"language-\">Select-String<\/code> kullan\u0131n.<br \/>\n* <strong><code class=\"language-\">-match<\/code> operat\u00f6r\u00fcn\u00fc verimli kullan\u0131n:<\/strong> D\u00fczenli ifadelerin g\u00fcc\u00fcnden yararlan\u0131n.<br \/>\n* <strong>Performans testleri yap\u0131n:<\/strong> Farkl\u0131 y\u00f6ntemlerin performans\u0131n\u0131 kar\u015f\u0131la\u015ft\u0131rmak i\u00e7in testler yap\u0131n ve en uygun olan\u0131 se\u00e7in.<br \/>\n* <strong><code class=\"language-\">-Raw<\/code> parametresini kullan\u0131n:<\/strong> B\u00fcy\u00fck dosyalar\u0131 i\u015flerken t\u00fcm dosyay\u0131 tek bir string olarak okuyun.<br \/>\n* <strong>Hatalar\u0131 \u00f6nceden tahmin edin:<\/strong>  \u00d6zel karakterler ve s\u0131n\u0131r durumlar\u0131 i\u00e7in \u00f6nlem al\u0131n.<\/p>\n<p><strong>Sonu\u00e7<\/strong><\/p>\n<p>PowerShell&#8217;de b\u00fcy\u00fck\/k\u00fc\u00e7\u00fck harfe duyarl\u0131 olmayan bir <code class=\"language-\">contains()<\/code> i\u015flemi ger\u00e7ekle\u015ftirmek i\u00e7in \u00e7e\u015fitli y\u00f6ntemler mevcuttur.  Se\u00e7ti\u011finiz y\u00f6ntem, veri k\u00fcmeniz ve performans gereksinimleriniz taraf\u0131ndan belirlenmelidir.  Bu makalede ele al\u0131nan teknikler ve ipu\u00e7lar\u0131, PowerShell metin i\u015fleme yeteneklerinizi geli\u015ftirmenize yard\u0131mc\u0131 olacakt\u0131r.<\/p>\n<p><strong>S\u0131k\u00e7a Sorulan Sorular (SSS):<\/strong><\/p>\n<p>1. <strong><code class=\"language-\">-contains<\/code> ve <code class=\"language-\">-match<\/code> aras\u0131ndaki fark nedir?<\/strong> <code class=\"language-\">-contains<\/code> koleksiyonlarda de\u011fer aramak i\u00e7in kullan\u0131l\u0131rken, <code class=\"language-\">-match<\/code> d\u00fczenli ifadelerle e\u015fle\u015fme yapar.<br \/>\n2. <strong><code class=\"language-\">Select-String<\/code> cmdlet&#8217;i ne zaman kullanmal\u0131y\u0131m?<\/strong> B\u00fcy\u00fck dosyalar\u0131 i\u015flerken veya performans kritik durumlarda <code class=\"language-\">Select-String<\/code> kullan\u0131n.<br \/>\n3. <strong>\u00d6zel karakterleri nas\u0131l ele alabilirim?<\/strong>  <code class=\"language-\">-match<\/code> ile \u00e7al\u0131\u015f\u0131rken \u00f6zel karakterleri escape etmek i\u00e7in <code class=\"language-\">\\<\/code> kullan\u0131n.<br \/>\n4. <strong>Performans\u0131 nas\u0131l \u00f6l\u00e7ebilirim?<\/strong>  <code class=\"language-\">Measure-Command<\/code> cmdlet&#8217;ini kullanarak farkl\u0131 y\u00f6ntemlerin performans\u0131n\u0131 kar\u015f\u0131la\u015ft\u0131rabilirsiniz.<br \/>\n5.  <strong>Daha fazla PowerShell \u00f6\u011frenmek i\u00e7in nereye bakabilirim?<\/strong>  PowerShell hakk\u0131nda daha fazla bilgi edinmek i\u00e7in [fatihsoysal.com](https:\/\/fatihsoysal.com) adresini ziyaret edebilirsiniz.<\/p>\n<p>Yazar: Fatih Soysal<\/p>\n","protected":false},"excerpt":{"rendered":"# PowerShell&#8217;de B\u00fcy\u00fck\/K\u00fc\u00e7\u00fck Harfe Duyarl\u0131 Olmayan Contains() Nas\u0131l Kullan\u0131l\u0131r? PowerShell&#8217;de metin i\u015flemleri yaparken, s\u0131kl\u0131kla bir dizenin ba\u015fka bir&hellip;","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"csco_page_header_type":"","csco_page_load_nextpost":"","csco_page_subscribe_form":"","csco_page_contact_form":"","footnotes":""},"categories":[1319],"tags":[],"class_list":{"0":"post-27474","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-powershell","7":"cs-entry","8":"cs-video-wrap"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v20.5 (Yoast SEO v25.3.1) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>PowerShell: B\u00fcy\u00fck\/K\u00fc\u00e7\u00fck Harfe Duyarl\u0131 Olmayan Contains() Kullan\u0131m\u0131<\/title>\n<meta name=\"description\" content=\"Hi\u00e7bir etiketi bulunamad\u0131.\" \/>\n<meta name=\"robots\" content=\"index, follow, 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