{"id":1166,"date":"2020-01-16T04:53:33","date_gmt":"2020-01-16T04:53:33","guid":{"rendered":"https:\/\/golangbyexamples.com\/?p=1166"},"modified":"2021-04-22T19:38:01","modified_gmt":"2021-04-22T14:08:01","slug":"iterate-over-all-files-and-folders-go","status":"publish","type":"post","link":"https:\/\/golangbyexamples.com\/iterate-over-all-files-and-folders-go\/","title":{"rendered":"Iterate over all files and folders for a path in Go (Golang)"},"content":{"rendered":"\n<p class=\"has-medium-font-size\"><strong>&#8216;Walk&#8217;<\/strong> function of &#8216;<strong>filepath&#8217;<\/strong> package can be used to recursively iterate over all files\/folder in a directory tree.<\/p>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-go\">https:\/\/golang.org\/pkg\/path\/filepath\/<\/code><\/pre>\n\n\n\n<p class=\"has-medium-font-size\"><strong>&#8216;Walk&#8217;<\/strong> function will walk the entire tree rooted at the root path include all subdirectories.&nbsp; Below is the signature of the function<\/p>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-go\">type WalkFunc func(path string, info os.FileInfo, err error) error<\/code><\/pre>\n\n\n\n<p class=\"has-medium-font-size\">The WalkFunc will be called for with the <strong>path<\/strong> of the file\/folder and <strong>fileInfo<\/strong> or the <strong>error<\/strong> if any error occurred while walking that file\/folder.<\/p>\n\n\n\n<p class=\"has-medium-font-size\">Some things to note about Walk function<\/p>\n\n\n\n<ul class=\"has-medium-font-size wp-block-list\"><li>All errors are filtered. An error might arise while opening\/visiting the file<\/li><li>The function does not follow symbolic links<\/li><li>The files are walked in lexical order<\/li><\/ul>\n\n\n\n<p class=\"has-medium-font-size\">Let&#8217;s see an example:<\/p>\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    \"path\/filepath\"\n)\n\nfunc main() {\n    currentDirectory, err := os.Getwd()\n    if err != nil {\n        log.Fatal(err)\n    }\n    iterate(currentDirectory)\n}\n\nfunc iterate(path string) {\n    filepath.Walk(path, func(path string, info os.FileInfo, err error) error {\n        if err != nil {\n            log.Fatalf(err.Error())\n        }\n        fmt.Printf(\"File Name: %s\\n\", info.Name())\n        return nil\n    })\n}<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>&#8216;Walk&#8217; function of &#8216;filepath&#8217; package can be used to recursively iterate over all files\/folder in a directory tree. &#8216;Walk&#8217; function will walk the entire tree rooted at the root path include all&#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-1166","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>Iterate over all files and folders for a path in Go (Golang) - 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\/iterate-over-all-files-and-folders-go\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Iterate over all files and folders for a path in Go (Golang) - Welcome To Golang By Example\" \/>\n<meta property=\"og:description\" content=\"&#8216;Walk&#8217; 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