https://lintech.uk/lab-notes/linux/Recent content in Linux on Richard LinternHugo -- gohugo.ioen-GBCopyright © 2026 Richard LinternMon, 31 Aug 2026 00:00:00 +0000https://lintech.uk/lab-notes/linux/linux-command-quick-reference/Mon, 31 Aug 2026 00:00:00 +0000https://lintech.uk/lab-notes/linux/linux-command-quick-reference/<blockquote><p><strong>Time guide</strong></p> <ul> <li>Initial checks: approximately 10 to 20 minutes</li> <li>Detailed investigation: approximately 20 to 60 minutes</li> </ul> </blockquote> <h2 class="relative group">Purpose <div id="purpose" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#purpose" aria-label="Anchor">#</a> </span> </h2> <p>Quick reference for files, processes, storage, services, networking, users and logs. This public reference consolidates professional support experience developed since March 2022 and uses generic placeholders rather than employer or customer information.</p>https://lintech.uk/lab-notes/linux/disk-filesystem-management/Mon, 31 Aug 2026 00:00:00 +0000https://lintech.uk/lab-notes/linux/disk-filesystem-management/<blockquote><p><strong>Time guide</strong></p> <ul> <li>Initial checks: approximately 10 to 20 minutes</li> <li>Detailed investigation: approximately 20 to 60 minutes</li> </ul> </blockquote> <h2 class="relative group">Purpose <div id="purpose" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#purpose" aria-label="Anchor">#</a> </span> </h2> <p>Read-only checks for devices, filesystems, mounts, capacity, inodes and high-usage paths. This public reference consolidates professional support experience developed since March 2022 and uses generic placeholders rather than employer or customer information.</p>https://lintech.uk/lab-notes/linux/linux-network-dns/Mon, 31 Aug 2026 00:00:00 +0000https://lintech.uk/lab-notes/linux/linux-network-dns/<blockquote><p><strong>Time guide</strong></p> <ul> <li>Initial checks: approximately 10 to 20 minutes</li> <li>Detailed investigation: approximately 20 to 60 minutes</li> </ul> </blockquote> <h2 class="relative group">Purpose <div id="purpose" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#purpose" aria-label="Anchor">#</a> </span> </h2> <p>Workflow for links, addressing, routes, resolvers, DNS and TCP connectivity. This public reference consolidates professional support experience developed since March 2022 and uses generic placeholders rather than employer or customer information.</p>https://lintech.uk/lab-notes/linux/linux-system-health/Mon, 31 Aug 2026 00:00:00 +0000https://lintech.uk/lab-notes/linux/linux-system-health/<blockquote><p><strong>Time guide</strong></p> <ul> <li>Initial checks: approximately 10 to 20 minutes</li> <li>Detailed investigation: approximately 20 to 60 minutes</li> </ul> </blockquote> <h2 class="relative group">Purpose <div id="purpose" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#purpose" aria-label="Anchor">#</a> </span> </h2> <p>Review uptime, CPU, memory, storage, services, logs and network state on Linux.</p>https://lintech.uk/lab-notes/linux/ssh-troubleshooting/Mon, 31 Aug 2026 00:00:00 +0000https://lintech.uk/lab-notes/linux/ssh-troubleshooting/<blockquote><p><strong>Time guide</strong></p> <ul> <li>Initial checks: approximately 10 to 20 minutes</li> <li>Detailed investigation: approximately 20 to 60 minutes</li> </ul> </blockquote> <h2 class="relative group">Purpose <div id="purpose" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#purpose" aria-label="Anchor">#</a> </span> </h2> <p>Workflow for name resolution, reachability, host keys, authentication and server logs. This public reference consolidates professional support experience developed since March 2022 and uses generic placeholders rather than employer or customer information.</p>https://lintech.uk/lab-notes/linux/systemd-service-troubleshooting/Mon, 31 Aug 2026 00:00:00 +0000https://lintech.uk/lab-notes/linux/systemd-service-troubleshooting/<blockquote><p><strong>Time guide</strong></p> <ul> <li>Initial checks: approximately 10 to 20 minutes</li> <li>Detailed investigation: approximately 20 to 60 minutes</li> </ul> </blockquote> <h2 class="relative group">Purpose <div id="purpose" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#purpose" aria-label="Anchor">#</a> </span> </h2> <p>Investigate failed or unhealthy Linux services using systemctl and Journald.</p>