{"componentChunkName":"component---src-templates-post-template-jsx","path":"/history/posts/2022-04-30--001","result":{"data":{"site":{"siteMetadata":{"title":"Blog by Eunyoung","subtitle":"작업 기록 블로그","copyright":"© All rights reserved.","author":{"name":"EunYoung","twitter":"#"},"disqusShortname":"","url":"https://ssongey.github.io"}},"markdownRemark":{"id":"311f2bc3-ca67-5b04-b520-16599b8c0c88","html":"<p><span class=\"title__sub1\"> ■ 자주 사용하는 문법 정리 </span>\n<span class=\"title__sub2\"> 1. null 체크 </span></p>\n<div class=\"gatsby-highlight\" data-language=\"shell\"><pre class=\"language-shell\"><code class=\"language-shell\"><span class=\"token keyword\">if</span> <span class=\"token punctuation\">[</span> -z <span class=\"token variable\">$1</span> <span class=\"token punctuation\">]</span>\n<span class=\"token keyword\">then</span>\n        <span class=\"token builtin class-name\">echo</span> <span class=\"token string\">\"null input\"</span>\n<span class=\"token keyword\">fi</span></code></pre></div>","fields":{"tagSlugs":["/tags/shell/"],"slug":"/history/posts/2022-04-30--001"},"frontmatter":{"title":"[Shell] 자주 사용하는 문법","tags":["shell"],"date":"2022-04-30","description":""}}},"pageContext":{"slug":"/history/posts/2022-04-30--001"}},"staticQueryHashes":[]}