Linux ps Komutu: 20 Ger\u00e7ek D\u00fcnya \u00d6rne\u011fiyle S\u00fcre\u00e7 Y\u00f6netimi<\/title> \n<body><\/p>\nLinux sistemlerinde s\u00fcre\u00e7 y\u00f6netimi, sistem y\u00f6neticileri ve geli\u015ftiriciler i\u00e7in kritik bir beceridir. Peki, sisteminizde hangi programlar\u0131n \u00e7al\u0131\u015ft\u0131\u011f\u0131n\u0131, ne kadar kaynak t\u00fcketti\u011fini veya neden yava\u015flad\u0131\u011f\u0131n\u0131 hi\u00e7 merak ettiniz mi? \u0130\u015fte tam da bu noktada, Linux’un temel ve g\u00fc\u00e7l\u00fc komutlar\u0131ndan biri olan <code>ps<\/code> devreye giriyor. Bu makalede, <code>ps<\/code> komutunun derinliklerine inerek, 20 ger\u00e7ek d\u00fcnya \u00f6rne\u011fiyle sistem s\u00fcre\u00e7lerinizi nas\u0131l etkili bir \u015fekilde izleyece\u011finizi, y\u00f6netece\u011finizi ve sorun giderece\u011finizi ad\u0131m ad\u0131m \u00f6\u011freneceksiniz.<\/p>\n<h2>Giri\u015f: Linux Sistemlerinde S\u00fcre\u00e7 Y\u00f6netimi Neden Hayati \u00d6nem Ta\u015f\u0131r?<\/h2>\nBir Linux sisteminin kalbi, \u00fczerinde \u00e7al\u0131\u015fan s\u00fcre\u00e7lerdir. Her uygulama, her servis ve hatta her kullan\u0131c\u0131 komutu bir s\u00fcre\u00e7 olarak i\u015fletim sistemi taraf\u0131ndan y\u00f6netilir. Ancak zaman zaman bu s\u00fcre\u00e7ler, sistemin yava\u015flamas\u0131na, donmas\u0131na veya beklenmedik davran\u0131\u015flar sergilemesine neden olabilir. \u00d6rne\u011fin, bir web sunucusu yan\u0131t vermeyi durdurabilir, bir veritaban\u0131 i\u015flemi a\u015f\u0131r\u0131 bellek t\u00fcketebilir veya arka planda \u00e7al\u0131\u015fan bir betik sonsuz bir d\u00f6ng\u00fcye girebilir. Bu t\u00fcr durumlarla kar\u015f\u0131la\u015f\u0131ld\u0131\u011f\u0131nda, sorunun kayna\u011f\u0131n\u0131 h\u0131zl\u0131ca tespit etmek ve m\u00fcdahale etmek hayati \u00f6nem ta\u015f\u0131r. \u0130\u015fte bu noktada, <code>ps<\/code> (process status) komutu, sistemin anl\u0131k s\u00fcre\u00e7 durumunu g\u00f6r\u00fcnt\u00fcleyerek size de\u011ferli bilgiler sunar. Bu komut sayesinde, hangi s\u00fcrecin ne kadar CPU kulland\u0131\u011f\u0131n\u0131, ne kadar belle\u011fe ihtiya\u00e7 duydu\u011funu, hangi kullan\u0131c\u0131 taraf\u0131ndan \u00e7al\u0131\u015ft\u0131r\u0131ld\u0131\u011f\u0131n\u0131 ve hatta s\u00fcrecin mevcut durumunu (\u00e7al\u0131\u015f\u0131yor, uyuyor, zombi vb.) kolayca g\u00f6rebilirsiniz. S\u00fcre\u00e7 y\u00f6netimi sadece sorun gidermekle kalmaz, ayn\u0131 zamanda sistem kaynaklar\u0131n\u0131 optimize etmek, g\u00fcvenlik a\u00e7\u0131klar\u0131n\u0131 tespit etmek ve genel sistem sa\u011fl\u0131\u011f\u0131n\u0131 korumak i\u00e7in de temel bir ara\u00e7t\u0131r. Bu makale boyunca, <code>ps<\/code> komutunun \u00e7e\u015fitli kullan\u0131m senaryolar\u0131n\u0131 ke\u015ffedecek, b\u00f6ylece Linux ortam\u0131n\u0131zda tam kontrol sa\u011flayabileceksiniz.<\/p>\n<h2>ps Komutunun Temelleri: S\u00fcre\u00e7 Bilgilerini Anlama ve Okuma<\/h2>\n<code>ps<\/code> komutu, ad\u0131ndan da anla\u015f\u0131laca\u011f\u0131 gibi, sistemdeki s\u00fcre\u00e7lerin anl\u0131k “foto\u011fraf\u0131n\u0131” \u00e7eker ve \u00e7e\u015fitli parametrelerle bu bilgiyi sunar. Bu komutu etkin bir \u015fekilde kullanabilmek i\u00e7in, \u00e7\u0131kt\u0131s\u0131n\u0131n ne anlama geldi\u011fini kavramak \u00f6nemlidir. Ba\u015flang\u0131\u00e7 olarak, en yayg\u0131n kullan\u0131lan iki formuna odaklanal\u0131m: <code>ps aux<\/code> ve <code>ps -ef<\/code>. Bu iki se\u00e7enek, genellikle t\u00fcm sistem s\u00fcre\u00e7lerini geni\u015f bir formatta listelemek i\u00e7in kullan\u0131l\u0131r ve \u00e7o\u011fu zaman ayn\u0131 veya benzer bilgileri sunar, ancak arg\u00fcmanlar\u0131 farkl\u0131 standartlardan (BSD ve System V) gelir.<\/p>\n<pre><code>\nps aux\n <\/code><\/pre>\nBu komut, BSD stilini takip eder ve genellikle a\u015fa\u011f\u0131daki s\u00fctunlar\u0131 g\u00f6r\u00fcnt\u00fcler:<\/p>\n<ul>\n<li>USER:<\/strong> S\u00fcreci ba\u015flatan kullan\u0131c\u0131 ad\u0131.<\/li>\n<li>PID:<\/strong> S\u00fcrecin benzersiz kimlik numaras\u0131 (Process ID).<\/li>\n<li>%CPU:<\/strong> S\u00fcrecin kulland\u0131\u011f\u0131 CPU y\u00fczdesi.<\/li>\n<li>%MEM:<\/strong> S\u00fcrecin kulland\u0131\u011f\u0131 fiziksel bellek y\u00fczdesi.<\/li>\n<li>VSZ:<\/strong> Sanal bellek boyutu (kilobayt cinsinden).<\/li>\n<li>RSS:<\/strong> Ger\u00e7ek (fiziksel) bellek boyutu (kilobayt cinsinden).<\/li>\n<li>TTY:<\/strong> S\u00fcrecin ili\u015fkili oldu\u011fu kontrol terminali (<code>?<\/code> ise yok).<\/li>\n<li>STAT:<\/strong> S\u00fcrecin mevcut durumu (\u00f6rne\u011fin, R: \u00e7al\u0131\u015f\u0131yor, S: uyuyor, Z: zombi).<\/li>\n<li>START:<\/strong> S\u00fcrecin ba\u015flad\u0131\u011f\u0131 zaman.<\/li>\n<li>TIME:<\/strong> S\u00fcrecin CPU \u00fczerinde harcad\u0131\u011f\u0131 toplam s\u00fcre.<\/li>\n<li>COMMAND:<\/strong> S\u00fcreci ba\u015flatan komut ve arg\u00fcmanlar\u0131.<\/li>\n<\/ul>\n<pre><code>\nps -ef\n <\/code><\/pre>\nBu komut ise System V stilini kullan\u0131r ve genellikle a\u015fa\u011f\u0131daki s\u00fctunlar\u0131 i\u00e7erir:<\/p>\n<ul>\n<li>UID:<\/strong> S\u00fcreci ba\u015flatan kullan\u0131c\u0131n\u0131n say\u0131sal kimli\u011fi.<\/li>\n<li>PID:<\/strong> S\u00fcrecin benzersiz kimlik numaras\u0131.<\/li>\n<li>PPID:<\/strong> S\u00fcrecin ebeveyn s\u00fcrecinin kimlik numaras\u0131 (Parent Process ID).<\/li>\n<li>C:<\/strong> CPU kullan\u0131m fakt\u00f6r\u00fc (BSD’deki %CPU’ya benzer).<\/li>\n<li>STIME:<\/strong> S\u00fcrecin ba\u015flad\u0131\u011f\u0131 zaman.<\/li>\n<li>TTY:<\/strong> S\u00fcrecin ili\u015fkili oldu\u011fu kontrol terminali.<\/li>\n<li>TIME:<\/strong> S\u00fcrecin CPU \u00fczerinde harcad\u0131\u011f\u0131 toplam s\u00fcre.<\/li>\n<li>CMD:<\/strong> S\u00fcreci ba\u015flatan komut ve arg\u00fcmanlar\u0131.<\/li>\n<\/ul>\nHer iki komut da sisteminizdeki t\u00fcm s\u00fcre\u00e7leri listelemek i\u00e7in olduk\u00e7a kullan\u0131\u015fl\u0131d\u0131r. \u00d6zellikle <code>PID<\/code>, <code>%CPU<\/code>, <code>%MEM<\/code> ve <code>STAT<\/code> s\u00fctunlar\u0131, bir s\u00fcrecin davran\u0131\u015f\u0131n\u0131 ve sistem \u00fczerindeki etkisini anlamak i\u00e7in kritik \u00f6neme sahiptir. \u00d6rne\u011fin, y\u00fcksek <code>%CPU<\/code> veya <code>%MEM<\/code> de\u011ferleri, bir s\u00fcrecin kaynaklar\u0131 a\u015f\u0131r\u0131 t\u00fcketti\u011fini g\u00f6sterebilirken, <code>STAT<\/code> s\u00fctunundaki ‘Z’ harfi bir zombi s\u00fcreci i\u015faret edebilir. Bu temel bilgileri anlamak, <code>ps<\/code> komutunu kullanarak daha karma\u015f\u0131k sorunlar\u0131 gidermenin ilk ad\u0131m\u0131d\u0131r.<\/p>\n<h2>S\u00fcre\u00e7leri Filtreleme ve \u00d6zelle\u015ftirme: \u0130htiyac\u0131n\u0131z Olan\u0131 Nas\u0131l Bulursunuz?<\/h2>\nBir Linux sisteminde y\u00fczlerce, hatta binlerce s\u00fcre\u00e7 ayn\u0131 anda \u00e7al\u0131\u015fabilir. Bu kadar \u00e7ok bilgi aras\u0131nda kaybolmadan, arad\u0131\u011f\u0131n\u0131z spesifik s\u00fcre\u00e7 bilgilerine ula\u015fmak i\u00e7in <code>ps<\/code> komutunun filtreleme ve \u00e7\u0131kt\u0131 \u00f6zelle\u015ftirme yeteneklerini kullanmak kritik \u00f6neme sahiptir. Bu b\u00f6l\u00fcmde, belirli kriterlere g\u00f6re s\u00fcre\u00e7leri nas\u0131l filtreleyece\u011finizi ve \u00e7\u0131kt\u0131y\u0131 kendi ihtiya\u00e7lar\u0131n\u0131za g\u00f6re nas\u0131l bi\u00e7imlendirece\u011finizi \u00f6\u011freneceksiniz.<\/p>\n<h3>Belirli Kriterlere G\u00f6re S\u00fcre\u00e7leri Filtreleme<\/h3>\nS\u00fcre\u00e7leri filtrelemenin en yayg\u0131n yollar\u0131ndan biri, <code>ps<\/code> \u00e7\u0131kt\u0131s\u0131n\u0131 <code>grep<\/code> komutuyla birle\u015ftirmektir. Bu sayede, belirli bir anahtar kelimeye veya kal\u0131ba uyan s\u00fcre\u00e7leri kolayca bulabilirsiniz.<\/p>\n\u00d6rnek 1: Belirli bir kullan\u0131c\u0131ya ait s\u00fcre\u00e7leri listeleme.<\/strong><\/p>\nDiyelim ki sistemdeki <code>nginx<\/code> kullan\u0131c\u0131s\u0131na ait t\u00fcm s\u00fcre\u00e7leri g\u00f6rmek istiyorsunuz:<\/p>\n<pre><code>\nps -u nginx\n <\/code><\/pre>\nVeya t\u00fcm s\u00fcre\u00e7ler aras\u0131ndan belirli bir kullan\u0131c\u0131n\u0131nkileri filtrelemek i\u00e7in:<\/p>\n<pre><code>\nps aux | grep nginx\n <\/code><\/pre>\n<code>grep<\/code> kullan\u0131rken, <code>grep<\/code> komutunun kendisinin de bir s\u00fcre\u00e7 olarak g\u00f6r\u00fcnebilece\u011fini unutmay\u0131n. Bunu \u00f6nlemek i\u00e7in, genellikle <code>grep<\/code> desenine bir k\u00f6\u015fe ayrac\u0131 eklenir:<\/p>\n<pre><code>\nps aux | grep '[n]ginx'\n <\/code><\/pre>\n\u00d6rnek 2: Belirli bir komut ad\u0131n\u0131 i\u00e7eren s\u00fcre\u00e7leri bulma.<\/strong><\/p>\nSisteminizdeki t\u00fcm <code>apache2<\/code> s\u00fcre\u00e7lerini listelemek i\u00e7in:<\/p>\n<pre><code>\nps aux | grep apache2\n <\/code><\/pre>\n\u00d6rnek 3: Belirli bir terminale ba\u011fl\u0131 s\u00fcre\u00e7leri listeleme.<\/strong><\/p>\n<code>tty1<\/code> terminalinde \u00e7al\u0131\u015fan s\u00fcre\u00e7leri g\u00f6rmek i\u00e7in:<\/p>\n<pre><code>\nps -t tty1\n <\/code><\/pre>\n<h3>\u00c7\u0131kt\u0131y\u0131 \u0130htiyaca G\u00f6re Bi\u00e7imlendirme ve S\u0131ralama<\/h3>\n<code>ps<\/code> komutu, <code>-o<\/code> se\u00e7ene\u011fi ile \u00e7\u0131kt\u0131da hangi s\u00fctunlar\u0131n g\u00f6sterilece\u011fini ve bunlar\u0131n nas\u0131l adland\u0131r\u0131laca\u011f\u0131n\u0131 \u00f6zelle\u015ftirmenize olanak tan\u0131r. Bu, \u00f6zellikle betik yazarken veya sadece belirli bilgilere odaklanmak istedi\u011finizde \u00e7ok kullan\u0131\u015fl\u0131d\u0131r.<\/p>\n\u00d6rnek 4: Sadece PID, CPU ve COMMAND s\u00fctunlar\u0131n\u0131 g\u00f6sterme.<\/strong><\/p>\n<pre><code>\nps -eo pid,%cpu,command\n <\/code><\/pre>\nBurada <code>-e<\/code> t\u00fcm s\u00fcre\u00e7leri, <code>-o<\/code> ise \u00e7\u0131kt\u0131 format\u0131n\u0131 belirtir. S\u00fctun isimleri i\u00e7in <code>ps -eo help<\/code> komutunu kullanarak tam listeyi g\u00f6rebilirsiniz.<\/p>\n\u00d6rnek 5: S\u00fcre\u00e7leri CPU kullan\u0131m\u0131na g\u00f6re azalan s\u0131rada s\u0131ralama.<\/strong><\/p>\n<pre><code>\nps aux --sort=-%cpu | head -n 10\n <\/code><\/pre>\n<code>--sort=-%cpu<\/code>, CPU kullan\u0131m\u0131na g\u00f6re azalan s\u0131rada (<code>-<\/code> i\u015fareti azalan s\u0131ra anlam\u0131na gelir) s\u0131ralama yapar. <code>head -n 10<\/code> ise ilk 10 s\u00fcreci g\u00f6sterir.<\/p>\n\u00d6rnek 6: Bellek kullan\u0131m\u0131na g\u00f6re s\u0131ralama.<\/strong><\/p>\n<pre><code>\nps aux --sort=-%mem | head -n 10\n <\/code><\/pre>\nBu filtreleme ve \u00f6zelle\u015ftirme teknikleri sayesinde, sisteminizdeki s\u00fcre\u00e7ler hakk\u0131nda \u00e7ok daha hedefli ve anlaml\u0131 bilgiler edinebilir, b\u00f6ylece potansiyel sorunlar\u0131 daha h\u0131zl\u0131 tespit edebilirsiniz.<\/p>\n<h2>Ger\u00e7ek D\u00fcnya Senaryolar\u0131: Kaynak T\u00fcketen ve Sorunlu S\u00fcre\u00e7leri Tespit Etme<\/h2>\nLinux sistemlerinde performans sorunlar\u0131 veya karars\u0131zl\u0131klar genellikle kaynaklar\u0131 a\u015f\u0131r\u0131 t\u00fcketen veya beklenmedik bir durumda olan s\u00fcre\u00e7lerden kaynaklan\u0131r. <code>ps<\/code> komutu, bu t\u00fcr “kaynak canavarlar\u0131n\u0131” veya “sorunlu s\u00fcre\u00e7leri” tespit etmek i\u00e7in vazge\u00e7ilmez bir ara\u00e7t\u0131r. \u0130\u015fte baz\u0131 ger\u00e7ek d\u00fcnya senaryolar\u0131 ve <code>ps<\/code> komutunu kullanarak bu sorunlar\u0131 nas\u0131l te\u015fhis edebilece\u011finiz:<\/p>\n<h3>Vaka Analizi: Y\u00fcksek Kaynak T\u00fcketimi ve \u00c7\u00f6z\u00fcmleri<\/h3>\nBir web sunucusu yan\u0131t vermiyor veya bir veritaban\u0131 i\u015flemi a\u015f\u0131r\u0131 yava\u015f \u00e7al\u0131\u015f\u0131yor. Bu durumda, ilk yapman\u0131z gereken hangi s\u00fcrecin CPU veya belle\u011fi yo\u011fun bir \u015fekilde kulland\u0131\u011f\u0131n\u0131 bulmakt\u0131r.<\/p>\n\u00d6rnek 7: En \u00e7ok CPU kullanan ilk 5 s\u00fcreci bulma.<\/strong><\/p>\n<pre><code>\nps aux --sort=-%cpu | head -n 6\n <\/code><\/pre>\n<code>head -n 6<\/code> komutunu kullanmam\u0131z\u0131n nedeni, \u00e7\u0131kt\u0131n\u0131n ilk sat\u0131r\u0131n\u0131n genellikle ba\u015fl\u0131k (header) sat\u0131r\u0131 olmas\u0131d\u0131r. Bu komut, en \u00e7ok CPU kullanan s\u00fcre\u00e7leri s\u0131ralar ve size sisteminizdeki CPU y\u00fck\u00fcn\u00fcn kayna\u011f\u0131n\u0131 g\u00f6sterir.<\/p>\n\u00d6rnek 8: En \u00e7ok bellek kullanan ilk 5 s\u00fcreci bulma.<\/strong><\/p>\n<pre><code>\nps aux --sort=-%mem | head -n 6\n <\/code><\/pre>\nBenzer \u015fekilde, bu komut da sisteminizdeki bellek s\u0131z\u0131nt\u0131lar\u0131n\u0131 veya a\u015f\u0131r\u0131 bellek t\u00fcketen uygulamalar\u0131 tespit etmenize yard\u0131mc\u0131 olur.<\/p>\n\u00d6rnek 9: Belirli bir PID’e ait t\u00fcm bilgileri detayl\u0131ca g\u00f6rme.<\/strong><\/p>\nE\u011fer bir s\u00fcrecin PID’ini biliyorsan\u0131z (\u00f6rne\u011fin 12345), o s\u00fcre\u00e7 hakk\u0131nda daha fazla bilgi almak i\u00e7in:<\/p>\n<pre><code>\nps -p 12345 -o pid,user,%cpu,%mem,vsz,rss,tty,stat,start,time,command\n <\/code><\/pre>\nBu, o s\u00fcrecin t\u00fcm detaylar\u0131n\u0131 tek bir sat\u0131rda g\u00f6sterir ve sorun giderme i\u00e7in \u00e7ok de\u011ferlidir.<\/p>\n<h3>Zombi ve Kilitlenmi\u015f S\u00fcre\u00e7leri Belirleme<\/h3>\nS\u00fcre\u00e7lerin durumu (STAT kolonu), onlar\u0131n sa\u011fl\u0131\u011f\u0131 hakk\u0131nda \u00f6nemli ipu\u00e7lar\u0131 verir. \u00d6zellikle ‘Z’ (Zombi) veya ‘D’ (Kesintisiz Uyku) durumlar\u0131 sorunlu s\u00fcre\u00e7leri i\u015faret edebilir.<\/p>\n\u00d6rnek 10: Zombi s\u00fcre\u00e7leri bulma.<\/strong><\/p>\n<pre><code>\nps aux | grep 'Z'\n <\/code><\/pre>\nZombi s\u00fcre\u00e7ler, ebeveynleri taraf\u0131ndan d\u00fczg\u00fcn bir \u015fekilde toplanmam\u0131\u015f (reap edilmemi\u015f) s\u00fcre\u00e7lerdir. Kaynak t\u00fcketmezler ancak PID tablosunda yer kaplarlar ve \u00e7ok say\u0131da olmalar\u0131 sorun yaratabilir.<\/p>\n\u00d6rnek 11: Kesintisiz uyku (Disk I\/O bekleyen) s\u00fcre\u00e7leri bulma.<\/strong><\/p>\n<pre><code>\nps aux | grep 'D'\n <\/code><\/pre>\nKesintisiz uyku durumundaki s\u00fcre\u00e7ler genellikle disk I\/O i\u015flemleri beklerken tak\u0131l\u0131 kalm\u0131\u015flard\u0131r ve <code>kill<\/code> komutuyla sonland\u0131r\u0131lamazlar. Bu durum, altta yatan bir donan\u0131m veya \u00e7ekirdek sorununa i\u015faret edebilir.<\/p>\n\u00d6rnek 12: Kilitlenmi\u015f veya durdurulmu\u015f s\u00fcre\u00e7leri (Stopped) bulma.<\/strong><\/p>\n<pre><code>\nps aux | grep 'T'\n <\/code><\/pre>\n‘T’ durumundaki s\u00fcre\u00e7ler genellikle bir sinyal (\u00f6rne\u011fin Ctrl+Z) ile durdurulmu\u015f veya hata ay\u0131klay\u0131c\u0131 taraf\u0131ndan ask\u0131ya al\u0131nm\u0131\u015ft\u0131r.<\/p>\n<h3>S\u00fcre\u00e7 A\u011fa\u00e7lar\u0131 ile \u0130li\u015fkileri Anlama<\/h3>\nBir s\u00fcrecin ebeveyn-\u00e7ocuk ili\u015fkilerini anlamak, \u00f6zellikle bir uygulaman\u0131n nas\u0131l ba\u015flat\u0131ld\u0131\u011f\u0131n\u0131 veya hangi ana s\u00fcrecin \u00e7\u00f6kt\u00fc\u011f\u00fcn\u00fc belirlemek i\u00e7in \u00e7ok \u00f6nemlidir.<\/p>\n\u00d6rnek 13: S\u00fcre\u00e7 a\u011fac\u0131n\u0131 g\u00f6r\u00fcnt\u00fcleme.<\/strong><\/p>\n<pre><code>\npstree\n <\/code><\/pre>\n<code>pstree<\/code> komutu, s\u00fcre\u00e7leri hiyerar\u015fik bir a\u011fa\u00e7 yap\u0131s\u0131nda g\u00f6sterir. Bu, bir s\u00fcrecin hangi ebeveyn s\u00fcre\u00e7ten t\u00fcredi\u011fini g\u00f6rsel olarak anlamak i\u00e7in \u00e7ok kullan\u0131\u015fl\u0131d\u0131r.<\/p>\n\u00d6rnek 14: ps komutuyla s\u00fcre\u00e7 a\u011fac\u0131n\u0131 g\u00f6r\u00fcnt\u00fcleme (ASCII format\u0131nda).<\/strong><\/p>\n<pre><code>\nps axjf\n <\/code><\/pre>\nBu komut, <code>pstree<\/code>‘ye benzer bir \u00e7\u0131kt\u0131 sunarak s\u00fcre\u00e7lerin ebeveyn-\u00e7ocuk ili\u015fkilerini ASCII karakterlerle g\u00f6sterir. Bu sayede, belirli bir servisin veya uygulaman\u0131n t\u00fcm alt s\u00fcre\u00e7lerini kolayca g\u00f6rebilirsiniz. \u00d6rne\u011fin, bir web sunucusunun (nginx veya apache) alt\u0131nda \u00e7al\u0131\u015fan i\u015f\u00e7i s\u00fcre\u00e7lerini (worker processes) bu \u015fekilde takip edebilirsiniz. Bu derinlemesine inceleme, sisteminizdeki karma\u015f\u0131k sorunlar\u0131n k\u00f6k nedenlerini anlaman\u0131za yard\u0131mc\u0131 olacakt\u0131r.<\/p>\n<h2>\u0130leri D\u00fczey Kullan\u0131m ve Entegrasyonlar: ps Komutundan Maksimum Verim Alma<\/h2>\n<code>ps<\/code> komutu, sadece anl\u0131k bir s\u00fcre\u00e7 foto\u011fraf\u0131 \u00e7ekmekten \u00e7ok daha fazlas\u0131n\u0131 sunar. Di\u011fer Linux komutlar\u0131yla entegre edildi\u011finde veya betiklerde kullan\u0131ld\u0131\u011f\u0131nda, sistem y\u00f6netimi g\u00f6revlerini otomatikle\u015ftirmek ve daha derinlemesine analizler yapmak i\u00e7in g\u00fc\u00e7l\u00fc bir ara\u00e7 haline gelir. Bu b\u00f6l\u00fcmde, <code>ps<\/code> komutunun ileri d\u00fczey kullan\u0131mlar\u0131n\u0131 ve di\u011fer ara\u00e7larla nas\u0131l entegre edilebilece\u011fini ke\u015ffedece\u011fiz.<\/p>\n\u00d6rnek 15: Bir s\u00fcrecin a\u00e7\u0131k dosyalar\u0131n\u0131 g\u00f6r\u00fcnt\u00fcleme.<\/strong><\/p>\nBir s\u00fcre\u00e7 hakk\u0131nda daha fazla bilgi edinmek i\u00e7in, o s\u00fcrecin hangi dosyalar\u0131 a\u00e7\u0131k tuttu\u011funu g\u00f6rmek isteyebilirsiniz. Bu, \u00f6zellikle kaynak kilitlenmeleri veya disk kullan\u0131m\u0131 sorunlar\u0131n\u0131 gidermede faydal\u0131d\u0131r. <code>lsof<\/code> komutu ile <code>ps<\/code> \u00e7\u0131kt\u0131s\u0131n\u0131 birle\u015ftirebiliriz:<\/p>\n<pre><code>\nps aux | grep 'my_application' | awk '{print $2}' | xargs lsof -p\n <\/code><\/pre>\nBu \u00f6rnek, <code>my_application<\/code> s\u00fcrecinin PID’ini al\u0131r ve <code>lsof -p<\/code> komutuna ileterek o s\u00fcrecin a\u00e7\u0131k dosyalar\u0131n\u0131 listeler.<\/p>\n\u00d6rnek 16: S\u00fcrekli s\u00fcre\u00e7 izleme i\u00e7in <code>watch<\/code> ile kullanma.<\/strong><\/p>\nS\u00fcre\u00e7lerin dinamik durumunu anl\u0131k olarak izlemek istedi\u011finizde, <code>watch<\/code> komutu <code>ps<\/code> \u00e7\u0131kt\u0131s\u0131n\u0131 belirli aral\u0131klarla yenileyerek size s\u00fcrekli bir g\u00f6r\u00fcn\u00fcm sunar:<\/p>\n<pre><code>\nwatch -n 2 'ps aux --sort=-%cpu | head -n 10'\n <\/code><\/pre>\nBu komut, her 2 saniyede bir en \u00e7ok CPU kullanan ilk 10 s\u00fcreci g\u00fcnceller. Bu, bir performans sorununu canl\u0131 olarak izlemek i\u00e7in olduk\u00e7a etkilidir.<\/p>\n\u00d6rnek 17: S\u00fcre\u00e7leri PID yerine komut ad\u0131na g\u00f6re sonland\u0131rma (<code>pkill<\/code> ile).<\/strong><\/p>\nBazen bir s\u00fcrecin PID’ini bilmeden onu sonland\u0131rmak isteyebilirsiniz. <code>pgrep<\/code> ve <code>pkill<\/code> komutlar\u0131 bu senaryolar i\u00e7in idealdir:<\/p>\n<pre><code>\npgrep -l nginx\n <\/code><\/pre>\nBu, <code>nginx<\/code> ad\u0131n\u0131 i\u00e7eren t\u00fcm s\u00fcre\u00e7lerin PID’lerini ve komut adlar\u0131n\u0131 listeler.<\/p>\n<pre><code>\npkill nginx\n <\/code><\/pre>\nBu komut, <code>nginx<\/code> ad\u0131n\u0131 i\u00e7eren t\u00fcm s\u00fcre\u00e7lere <code>SIGTERM<\/code> sinyali g\u00f6ndererek onlar\u0131 sonland\u0131r\u0131r. Daha agresif bir sonland\u0131rma i\u00e7in <code>pkill -9 nginx<\/code> kullanabilirsiniz.<\/p>\n\u00d6rnek 18: S\u00fcre\u00e7 durumlar\u0131n\u0131 daha detayl\u0131 inceleme (STAT kolonu).<\/strong><\/p>\n<code>STAT<\/code> kolonu, bir s\u00fcrecin durumunu tek veya birka\u00e7 karakterle \u00f6zetler. \u0130\u015fte baz\u0131 yayg\u0131n durumlar:<\/p>\n<ul>\n<li>R:<\/strong> Running (\u00c7al\u0131\u015f\u0131yor) veya \u00e7al\u0131\u015fmaya haz\u0131r.<\/li>\n<li>S:<\/strong> Sleeping (Uyuyor), bir olay bekliyor.<\/li>\n<li>D:<\/strong> Uninterruptible sleep (Kesintisiz uyku), genellikle I\/O bekliyor.<\/li>\n<li>Z:<\/strong> Zombie (Zombi), s\u00fcre\u00e7 bitti ama ebeveyn taraf\u0131ndan toplanmad\u0131.<\/li>\n<li>T:<\/strong> Stopped (Durduruldu), bir sinyal ile durduruldu.<\/li>\n<li><:<\/strong> High-priority (Y\u00fcksek \u00f6ncelikli).<\/li>\n<li>N:<\/strong> Low-priority (D\u00fc\u015f\u00fck \u00f6ncelikli).<\/li>\n<li>s:<\/strong> Session leader (Oturum lideri).<\/li>\n<li>+:<\/strong> Foreground process group (\u00d6n plan s\u00fcre\u00e7 grubu).<\/li>\n<li>l:<\/strong> Multi-threaded (\u00c7oklu i\u015f par\u00e7ac\u0131kl\u0131).<\/li>\n<\/ul>\nBu bayraklar\u0131 anlamak, bir s\u00fcrecin neden belirli bir \u015fekilde davrand\u0131\u011f\u0131n\u0131 veya neden tak\u0131l\u0131 kald\u0131\u011f\u0131n\u0131 anlaman\u0131za yard\u0131mc\u0131 olur. \u00d6rne\u011fin, bir uygulaman\u0131n s\u00fcrekli ‘D’ durumunda kalmas\u0131 disk I\/O sorunlar\u0131na i\u015faret edebilir.<\/p>\n\u00d6rnek 19: Belirli bir komutun ka\u00e7 \u00f6rne\u011finin \u00e7al\u0131\u015ft\u0131\u011f\u0131n\u0131 sayma.<\/strong><\/p>\n<pre><code>\nps -ef | grep -c \"httpd\"\n <\/code><\/pre>\nBu komut, sistemde ka\u00e7 tane <code>httpd<\/code> s\u00fcrecinin \u00e7al\u0131\u015ft\u0131\u011f\u0131n\u0131 sayar. Bu, bir servisin beklenen say\u0131da \u00f6rne\u011finin \u00e7al\u0131\u015f\u0131p \u00e7al\u0131\u015fmad\u0131\u011f\u0131n\u0131 kontrol etmek i\u00e7in kullan\u0131\u015fl\u0131d\u0131r.<\/p>\n\u00d6rnek 20: S\u00fcre\u00e7lerin \u00e7al\u0131\u015ft\u0131\u011f\u0131 s\u00fcreyi g\u00f6r\u00fcnt\u00fcleme.<\/strong><\/p>\n<pre><code>\nps -eo pid,etime,command | grep 'my_long_running_script'\n <\/code><\/pre>\n<code>etime<\/code> (elapsed time) s\u00fctunu, bir s\u00fcrecin ne kadar s\u00fcredir \u00e7al\u0131\u015ft\u0131\u011f\u0131n\u0131 g\u00f6sterir. Bu, uzun s\u00fcreli betikleri veya servisleri izlemek i\u00e7in faydal\u0131d\u0131r.<\/p>\nBu ileri d\u00fczey teknikler, <code>ps<\/code> komutunu daha karma\u015f\u0131k sistem y\u00f6netimi g\u00f6revlerinde ve otomasyon senaryolar\u0131nda etkin bir \u015fekilde kullanman\u0131z\u0131 sa\u011flar. Unutmay\u0131n, bu makalede sunulan HTML yap\u0131s\u0131, modern web standartlar\u0131na uygun olarak semantik bir \u015fekilde tasarlanm\u0131\u015ft\u0131r. Mobil uyumluluk ve farkl\u0131 tema (light\/dark mode) deste\u011fi gibi g\u00f6rsel detaylar, harici bir CSS dosyas\u0131 arac\u0131l\u0131\u011f\u0131yla kolayca sa\u011flanabilir. \u00d6rne\u011fin, duyarl\u0131 tasar\u0131m i\u00e7in CSS’te <code>@media<\/code> sorgular\u0131 kullan\u0131larak farkl\u0131 ekran boyutlar\u0131na g\u00f6re d\u00fczenlemeler yap\u0131labilir ve renk \u015femalar\u0131 CSS de\u011fi\u015fkenleri veya tema s\u0131n\u0131flar\u0131 arac\u0131l\u0131\u011f\u0131yla y\u00f6netilebilir, b\u00f6ylece i\u00e7eri\u011fin okunabilirli\u011fi her ortamda garanti alt\u0131na al\u0131n\u0131r.<\/p>\n<h2>Sonu\u00e7 ve S\u0131k\u00e7a Sorulan Sorular<\/h2>\nBu makale boyunca, Linux sistemlerinde s\u00fcre\u00e7 y\u00f6netiminin temel ta\u015f\u0131 olan <code>ps<\/code> komutunun derinliklerine indik. Temel kullan\u0131mlar\u0131ndan ba\u015flayarak, s\u00fcre\u00e7leri filtreleme, \u00e7\u0131kt\u0131lar\u0131 \u00f6zelle\u015ftirme ve ger\u00e7ek d\u00fcnya senaryolar\u0131nda kar\u015f\u0131la\u015f\u0131lan sorunlar\u0131 te\u015fhis etme y\u00f6ntemlerine kadar bir\u00e7ok konuyu ele ald\u0131k. CPU ve bellek canavarlar\u0131n\u0131 tespit etmekten, zombi s\u00fcre\u00e7leri bulmaya, hatta s\u00fcre\u00e7 a\u011fa\u00e7lar\u0131n\u0131 analiz etmeye kadar 20 farkl\u0131 \u00f6rnekle <code>ps<\/code> komutunun ne kadar \u00e7ok y\u00f6nl\u00fc ve g\u00fc\u00e7l\u00fc bir ara\u00e7 oldu\u011funu g\u00f6sterdik. Art\u0131k, sisteminizdeki s\u00fcre\u00e7ler hakk\u0131nda daha bilin\u00e7li kararlar verebilir, performans sorunlar\u0131n\u0131 daha h\u0131zl\u0131 te\u015fhis edebilir ve Linux ortam\u0131n\u0131zda daha etkin bir \u015fekilde \u00e7al\u0131\u015fabilirsiniz. <code>ps<\/code> komutu, basit bir listeleme arac\u0131ndan \u00e7ok daha fazlas\u0131d\u0131r; do\u011fru kullan\u0131ld\u0131\u011f\u0131nda, bir sistem y\u00f6neticisinin en iyi dostlar\u0131ndan biri haline gelir. Unutmay\u0131n, pratik yapmak ve farkl\u0131 senaryolar\u0131 denemek, bu komutta ustala\u015fman\u0131n anahtar\u0131d\u0131r.<\/p>\n<h3>S\u0131k\u00e7a Sorulan Sorular<\/h3>\n<dl>\n<dt>ps komutu ile <code>top<\/code> veya <code>htop<\/code> aras\u0131ndaki fark nedir?<\/strong><\/dt>\n<dd><code>ps<\/code> komutu, s\u00fcre\u00e7lerin anl\u0131k bir “foto\u011fraf\u0131n\u0131” \u00e7eker ve \u00e7\u0131kt\u0131y\u0131 bir kereli\u011fine g\u00f6sterir. <code>top<\/code> ve <code>htop<\/code> ise s\u00fcre\u00e7leri dinamik olarak, ger\u00e7ek zamanl\u0131 ve s\u00fcrekli g\u00fcncellenen bir aray\u00fczde g\u00f6sterir. <code>htop<\/code>, <code>top<\/code>‘a g\u00f6re daha kullan\u0131c\u0131 dostu bir aray\u00fcze ve ek \u00f6zelliklere sahiptir.<\/dd>\n<dt>Bir s\u00fcreci sonland\u0131rmak i\u00e7in <code>ps<\/code> komutunu nas\u0131l kullan\u0131r\u0131m?<\/strong><\/dt>\n<dd><code>ps<\/code> komutu do\u011frudan s\u00fcre\u00e7 sonland\u0131rma yetene\u011fine sahip de\u011fildir. Bir s\u00fcreci sonland\u0131rmak i\u00e7in \u00f6nce <code>ps<\/code> ile s\u00fcrecin PID’ini (Process ID) bulman\u0131z, ard\u0131ndan <code>kill<\/code> komutunu kullanman\u0131z gerekir. \u00d6rne\u011fin: <code>kill <PID><\/code> veya daha agresif bir sonland\u0131rma i\u00e7in <code>kill -9 <PID><\/code>.<\/dd>\n<dt><code>ps aux<\/code> ve <code>ps -ef<\/code> aras\u0131ndaki temel fark nedir?<\/strong><\/dt>\n<dd>Her ikisi de t\u00fcm sistem s\u00fcre\u00e7lerini listeler, ancak farkl\u0131 s\u00f6zdizimi standartlar\u0131ndan gelirler (<code>aux<\/code> BSD stili, <code>-ef<\/code> System V stili). \u00c7\u0131kt\u0131 s\u00fctunlar\u0131 ve varsay\u0131lan s\u0131ralama biraz farkl\u0131l\u0131k g\u00f6sterebilir, ancak genellikle benzer bilgileri sunarlar. \u00c7o\u011fu modern Linux da\u011f\u0131t\u0131m\u0131nda her ikisi de kullan\u0131labilir.<\/dd>\n<dt>Zombi s\u00fcre\u00e7ler neden olu\u015fur ve onlarla nas\u0131l ba\u015fa \u00e7\u0131k\u0131l\u0131r?<\/strong><\/dt>\n<dd>Zombi s\u00fcre\u00e7ler (<code>STAT<\/code> kolonunda ‘Z’ ile g\u00f6sterilir), ebeveyn s\u00fcre\u00e7leri taraf\u0131ndan d\u00fczg\u00fcn bir \u015fekilde toplanmam\u0131\u015f (reap edilmemi\u015f) s\u00fcre\u00e7lerdir. Kaynak t\u00fcketmezler ancak PID tablosunda yer kaplarlar. Genellikle ebeveyn s\u00fcreci sonland\u0131r\u0131ld\u0131\u011f\u0131nda zombiler de ortadan kalkar. Ebeveyn s\u00fcreci tespit edip sonland\u0131rmak veya sistemi yeniden ba\u015flatmak genellikle \u00e7\u00f6z\u00fcm yoludur.<\/dd>\n<dt>Bir s\u00fcrecin hangi dizinden ba\u015flat\u0131ld\u0131\u011f\u0131n\u0131 nas\u0131l \u00f6\u011frenebilirim?<\/strong><\/dt>\n<dd>Bir s\u00fcrecin PID’ini bildi\u011finizde, <code>\/proc\/<PID>\/cwd<\/code> sembolik linkine bakarak \u00e7al\u0131\u015fma dizinini \u00f6\u011frenebilirsiniz. \u00d6rne\u011fin: <code>readlink \/proc\/12345\/cwd<\/code>.<\/dd>\n<\/dl>\n<\/body><\/p>\n","protected":false},"excerpt":{"rendered":"Linux ps Komutu: 20 Ger\u00e7ek D\u00fcnya \u00d6rne\u011fiyle S\u00fcre\u00e7 Y\u00f6netimi Linux sistemlerinde s\u00fcre\u00e7 y\u00f6netimi, sistem y\u00f6neticileri ve geli\u015ftiriciler i\u00e7in…","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":[241],"tags":[],"class_list":{"0":"post-41285","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-linux","7":"cs-entry","8":"cs-video-wrap"},"yoast_head":"\n<title>Giri\u015f: Linux Sistemlerinde S\u00fcre\u00e7 Y\u00f6netimi Neden Hayati \u00d6nem Ta\u015f\u0131r?<\/title>\n<meta name=\"description\" content=\"Linux sistemlerinde s\u00fcre\u00e7 y\u00f6netimi, sistem y\u00f6neticileri ve geli\u015ftiriciler i\u00e7in kritik bir beceridir.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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