{"id":1428,"date":"2020-02-22T07:52:36","date_gmt":"2020-02-22T07:52:36","guid":{"rendered":"https:\/\/golangbyexamples.com\/?p=1428"},"modified":"2020-03-16T15:49:37","modified_gmt":"2020-03-16T15:49:37","slug":"list-all-env-variables-go","status":"publish","type":"post","link":"https:\/\/golangbyexamples.com\/list-all-env-variables-go\/","title":{"rendered":"List all env variables in Go"},"content":{"rendered":"\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_17 counter-hierarchy counter-decimal ez-toc-light-blue\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" style=\"display: none;\"><i class=\"ez-toc-glyphicon ez-toc-icon-toggle\"><\/i><\/a><\/span><\/div>\n<nav><ul class=\"ez-toc-list ez-toc-list-level-1\"><li class=\"ez-toc-page-1 ez-toc-heading-level-1\"><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/golangbyexamples.com\/list-all-env-variables-go\/#Overview\" title=\"Overview\">Overview<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-1\"><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/golangbyexamples.com\/list-all-env-variables-go\/#Code\" title=\"Code:\">Code:<\/a><\/li><\/ul><\/nav><\/div>\n<h1 class=\"has-luminous-vivid-orange-color has-text-color wp-block-heading\"><span class=\"ez-toc-section\" id=\"Overview\"><\/span><strong>Overview<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h1>\n\n\n\n<p class=\"has-medium-font-size\"><strong>os<\/strong> package provides an <strong>Environ()<\/strong> function to get the list all environment variables.<\/p>\n\n\n\n<ul class=\"has-medium-font-size wp-block-list\"><li>Get all the env variables. It returns an array of string.<\/li><\/ul>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-\">func Environ() []string <\/code><\/pre>\n\n\n\n<p class=\"has-medium-font-size\">There is also a way to clear all the env variables. <strong>Clearenv()<\/strong> function can be used to achieve the same.<\/p>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-\">func Clearenv()<\/code><\/pre>\n\n\n\n<h1 class=\"has-luminous-vivid-orange-color has-text-color wp-block-heading\"><span class=\"ez-toc-section\" id=\"Code\"><\/span><strong>Code:<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h1>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-go\">package main\n\nimport (\n    \"fmt\"\n    \"log\"\n    \"os\"\n)\n\nfunc main() {\n    \/\/Set env a to b\n    err := os.Setenv(\"a\", \"b\")\n    if err != nil {\n        log.Fatal(err)\n    }\n\n    err = os.Setenv(\"c\", \"d\")\n    if err != nil {\n        log.Fatal(err)\n    }\n\n    \/\/Get all env variables\n    fmt.Println(os.Environ())\n\n    \/\/Clear all env variables\n    os.Clearenv()\n\n    \/\/Again get all env variable\n    fmt.Println(os.Environ())\n}<\/code><\/pre>\n\n\n\n<p class=\"has-medium-font-size\"><strong>Output:<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-go\">List of all env varialbes on your system including a and b<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>Table of Contents OverviewCode: Overview os package provides an Environ() function to get the list all environment variables. Get all the env variables. It returns an array of string. There is also&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":"","footnotes":"","jetpack_publicize_message":"","jetpack_is_tweetstorm":false},"categories":[1],"tags":[],"class_list":["post-1428","post","type-post","status-publish","format-standard","hentry","category-tech"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>List all env variables in Go - Welcome To Golang By Example<\/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:\/\/golangbyexamples.com\/list-all-env-variables-go\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"List all env variables in Go - Welcome To Golang By Example\" \/>\n<meta property=\"og:description\" content=\"Table of Contents OverviewCode: Overview os package provides an Environ() function to get the list all environment variables. 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