{"id":3654,"date":"2023-02-06T16:28:49","date_gmt":"2023-02-06T10:58:49","guid":{"rendered":"https:\/\/trysiteprice.com\/blog\/?p=3654"},"modified":"2023-02-06T16:28:49","modified_gmt":"2023-02-06T10:58:49","slug":"linux-find-out-what-is-using-tcp-port-80","status":"publish","type":"post","link":"https:\/\/trysiteprice.com\/blog\/linux-find-out-what-is-using-tcp-port-80\/","title":{"rendered":"Linux: Find Out What Is Using TCP Port 80"},"content":{"rendered":"<p>To find out what is using TCP port 80 on a Linux system, you can use the <code>lsof<\/code> (List Open Files) command, which displays information about files opened by processes running on the system.<\/p>\n<p>Here&#8217;s the command to find out what is using TCP port 80:<\/p>\n<div class=\"bg-black mb-4 rounded-md\">\n<div class=\"flex items-center relative text-gray-200 bg-gray-800 px-4 py-2 text-xs font-sans\"><\/div>\n<div class=\"p-4 overflow-y-auto\"><code class=\"!whitespace-pre hljs language-css\">$ sudo lsof -<span class=\"hljs-selector-tag\">i<\/span> :<span class=\"hljs-number\">80<\/span><br \/>\n<\/code><\/div>\n<\/div>\n<p>This will display a list of all processes that are using TCP port 80, along with the PID (process ID), the name of the process, and the username that owns the process.<\/p>\n<p>For example:<\/p>\n<div class=\"bg-black mb-4 rounded-md\">\n<div class=\"flex items-center relative text-gray-200 bg-gray-800 px-4 py-2 text-xs font-sans\"><\/div>\n<div class=\"p-4 overflow-y-auto\"><code class=\"!whitespace-pre hljs language-graphql\">COMMAND   PID   USER   FD   <span class=\"hljs-keyword\">TYPE<\/span> DEVICE SIZE\/OFF NODE NAME<br \/>\nhttpd    <span class=\"hljs-number\">1234<\/span>   root    <span class=\"hljs-number\">4<\/span>u  IPv4  <span class=\"hljs-number\">12345<\/span>      <span class=\"hljs-number\">0<\/span>t0  TCP *<span class=\"hljs-punctuation\">:<\/span>http <span class=\"hljs-punctuation\">(<\/span>LISTEN<span class=\"hljs-punctuation\">)<\/span><br \/>\n<\/code><\/div>\n<\/div>\n<p>In this example, the process with PID 1234 is using TCP port 80 and it&#8217;s the Apache HTTP Server.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>To find out what is using TCP port 80 on a Linux system, you can use the lsof (List Open Files) command, which displays information about files opened by processes running on the system. Here&#8217;s the command to find out what is using TCP port 80: $ sudo lsof -i :80 This will display a &#8230; <a title=\"Linux: Find Out What Is Using TCP Port 80\" class=\"read-more\" href=\"https:\/\/trysiteprice.com\/blog\/linux-find-out-what-is-using-tcp-port-80\/\" aria-label=\"Read more about Linux: Find Out What Is Using TCP Port 80\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3654","post","type-post","status-publish","format-standard","hentry","category-best-tutorial"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Linux: Find Out What Is Using TCP Port 80 - TrySitePrice<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/trysiteprice.com\/blog\/linux-find-out-what-is-using-tcp-port-80\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Linux: Find Out What Is Using TCP Port 80 - TrySitePrice\" \/>\n<meta property=\"og:description\" content=\"To find out what is using TCP port 80 on a Linux system, you can use the lsof (List Open Files) command, which displays information about files opened by processes running on the system. Here&#8217;s the command to find out what is using TCP port 80: $ sudo lsof -i :80 This will display a ... 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