Tag: sysadmin

Drive is dying. Which tool do you reach for? ddrescue clones, TestDisk repairs partitions, PhotoRec carves files. They're a workflow, not rivals.

Containers are just namespaces and cgroups in a trench coat. Build one yourself with unshare and nsenter — no Docker required. Demystifies what actually happens.

Twenty powerful bash one-liners every sysadmin should know—file ops, process hunting, networking, text processing, disk analysis

Compile software on Raspberry Pi or cheap VPS with 512MB–2GB RAM. Swap, parallel jobs, ccache, and swappiness tuning make it work.

nohup, disown, and & all keep processes running after logout — but they work differently. Here's which one to reach for and why.

Find your Linux distro version, kernel version, and architecture with uname, lsb_release, /etc/os-release, and hostnamectl.

Fix 'Argument list too long' errors in bash when cp or rsync chokes on thousands of files — xargs and find-based workarounds.

Monitor Linux servers with htop, iostat, netstat, vmstat, and Prometheus — pick the right tool for CPU, memory, disk, and network issues.

Ollama keeps models in VRAM after every request. Control GPU usage with keep_alive, force-unload via the API, and check memory to stop the reload cycle.

Rename files to remove spaces and special characters using bash — rename, tr, and parameter expansion patterns for bulk file cleanup.

Repair and optimize all MySQL databases at once with mysqlcheck — a one-liner that runs on every table without logging into MySQL.

Restic, Borg, and Kopia all deduplicate and encrypt — but differ on backends, compression, and UI. Pick the right backup tool for your Linux home lab.