https://gtirloni.com/Recent content on Giovanni TirloniHugoen-usSun, 31 Dec 2017 00:00:00 +0000https://gtirloni.com/posts/processes-with-brackets-in-ps-output/Sun, 31 Dec 2017 00:00:00 +0000https://gtirloni.com/posts/processes-with-brackets-in-ps-output/<p>Have you ever wondered why some processes have brackets around their names?</p> <div class="highlight"><pre tabindex="0" class="chroma"><code class="language-shell" data-lang="shell"><span class="line"><span class="cl"> PID TTY STAT TIME COMMAND </span></span><span class="line"><span class="cl"> <span class="m">1</span> ? Ss 0:03 /usr/lib/systemd/systemd --switched-root --system </span></span><span class="line"><span class="cl"> <span class="m">2</span> ? S 0:00 <span class="o">[</span>kthreadd<span class="o">]</span> </span></span><span class="line"><span class="cl"> <span class="m">4</span> ? I&lt; 0:00 <span class="o">[</span>kworker/0:0H<span class="o">]</span> </span></span><span class="line"><span class="cl"> <span class="m">6</span> ? I&lt; 0:00 <span class="o">[</span>mm_percpu_wq<span class="o">]</span> </span></span><span class="line"><span class="cl">... </span></span></code></pre></div><p>The <code>COMMAND</code> column shows the command that was used to start that process and all its arguments in a string. By reading the <a href="http://man7.org/linux/man-pages/man1/ps.1.html">ps(1)</a> man page, you will find out that the brackets mean the arguments weren&rsquo;t available. But where do they come from exactly?</p>https://gtirloni.com/about/Mon, 01 Jan 0001 00:00:00 +0000https://gtirloni.com/about/<p>I&rsquo;m a Brazilian engineer with a lifelong curiosity for systems and how they <del>break</del> work.</p> <p>I&rsquo;ve been working professionally with computers since 2001, but my first serious encounter with them happened back in 1994 (still in the DOS/Win3.11 days). I installed Red Hat Linux 4.0 in 1997 and have been working with open source ever since, digging through the internals of operating systems and any software I&rsquo;m working with.</p> <p>My career has been shaped by a fascination with infrastructure &ndash; how it&rsquo;s built, how it fails, and how to make it resilient. That curiosity has taken me through roles like System Administrator, DevOps Engineer, Platform Engineer, and Site Reliability Engineer. Today, I work as a Staff SRE at a major consumer tech company, focused on performance, reliability, and distributed systems.</p>https://gtirloni.com/cats/bebel/Mon, 01 Jan 0001 00:00:00 +0000https://gtirloni.com/cats/bebel/https://gtirloni.com/cats/billy/Mon, 01 Jan 0001 00:00:00 +0000https://gtirloni.com/cats/billy/https://gtirloni.com/cats/chiquinho/Mon, 01 Jan 0001 00:00:00 +0000https://gtirloni.com/cats/chiquinho/https://gtirloni.com/cats/gordon/Mon, 01 Jan 0001 00:00:00 +0000https://gtirloni.com/cats/gordon/https://gtirloni.com/cats/lala/Mon, 01 Jan 0001 00:00:00 +0000https://gtirloni.com/cats/lala/https://gtirloni.com/cats/lori/Mon, 01 Jan 0001 00:00:00 +0000https://gtirloni.com/cats/lori/https://gtirloni.com/cats/mila/Mon, 01 Jan 0001 00:00:00 +0000https://gtirloni.com/cats/mila/https://gtirloni.com/cats/mingau/Mon, 01 Jan 0001 00:00:00 +0000https://gtirloni.com/cats/mingau/https://gtirloni.com/cats/mitchan/Mon, 01 Jan 0001 00:00:00 +0000https://gtirloni.com/cats/mitchan/https://gtirloni.com/cats/nico/Mon, 01 Jan 0001 00:00:00 +0000https://gtirloni.com/cats/nico/https://gtirloni.com/cats/ozzy/Mon, 01 Jan 0001 00:00:00 +0000https://gtirloni.com/cats/ozzy/https://gtirloni.com/cats/pretinho/Mon, 01 Jan 0001 00:00:00 +0000https://gtirloni.com/cats/pretinho/https://gtirloni.com/cats/raj/Mon, 01 Jan 0001 00:00:00 +0000https://gtirloni.com/cats/raj/https://gtirloni.com/cats/thor/Mon, 01 Jan 0001 00:00:00 +0000https://gtirloni.com/cats/thor/https://gtirloni.com/cats/tom/Mon, 01 Jan 0001 00:00:00 +0000https://gtirloni.com/cats/tom/https://gtirloni.com/cats/yubi/Mon, 01 Jan 0001 00:00:00 +0000https://gtirloni.com/cats/yubi/