https://meerstory-hugo.pages.dev/en/categories/linux/Recent content in Linux on Meerstory BlogHugoen-usThu, 27 Aug 2026 17:19:33 +0900https://meerstory-hugo.pages.dev/en/ubuntu/20260827_171915_1_ls_al_ls/Thu, 27 Aug 2026 17:19:33 +0900https://meerstory-hugo.pages.dev/en/ubuntu/20260827_171915_1_ls_al_ls/<h2 id="overview">Overview</h2> <p>In a Linux environment, checking hidden configuration files or file permissions is the first step in system administration and development. In this article, we introduce how to quickly and accurately check even hidden files using the <code>ls -al</code> command, along with essential practical options. Master file permissions and sorting tips through terminal hands-on practice.</p> <h2 id="1-linux-file-system-and-concept-of-hidden-files--and-the--a-option">1. Linux File System and Concept of Hidden Files (.), and the -a Option</h2> <p><code>mkdir -p ~/ls_practice &amp;&amp; cd ~/ls_practice</code> command creates the directory required for practice and navigates to that location.<br> After creating the directory with <code>mkdir</code>, it continuously executes the <code>cd</code> command using the <code>&amp;&amp;</code> operator to move to it.<br> As a result of execution, the directory is successfully created at the specified path and the current working directory changes.<br> ⚙️ [Key Options]</p>