Why run a language model on your own machine? If you’re a developer, system admin, or just someone who values privacy, these benefits make local LLMs worth a look.
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When you first see a file in Linux, the three-letter string that starts with -rw-r--r-- can look like an alien language.It tells the system who can read, write, or execute that file. Don’t worry – it’s just a set of rules.In this post we’ll break those rules down into bite-sized pieces and give you a handy cheat…
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At Tom’s IT Cafe we break down the hard stuff so you can secure yoursystems without getting lost in jargon. Below is a straight-ahead lookat what “in transit” and “in rest” mean, why they matter, and how toimplement them with the most common algorithms.
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What is a firewall? A firewall sits between your server and the outside world. It decides which network traffic is allowed to reach your machine and which should be dropped. Think of it as a bouncer at a club: only people on the guest list get in. UFW, short for Uncomplicated Firewall, is Ubuntu’s front‑end…
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Every system admin has a moment when a simple “look at that file” turnsinto a three-hour hunt for information. That’s where the old friendsgrep, head, tail, cut, less and sed come in. They’re notfancy new tools; they’re tried-and-true helpers that can save you hoursof repetitive work.
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Want your blog reachable by anyone – both Tor users and regular browsers – without running two separate installations?The trick is one code-base, two reverse proxies, and a single database. Below is a quick 400-500 word guide for Ubuntu/Debian that shows the minimal steps.
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Want a private blog or small business site that nobody can reach unless they use the Tor Browser?Below is a step-by-step guide that keeps the server lean, secure, and accessible only via an .onion address.All commands are for Ubuntu/Debian; adjust paths if you’re on another distribution.
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Tired of corporate servers watching every chat?Host your own Matrix on Tor, no public IP, zero tracking.By running Matrix over Tor, you eliminate exposure to public servers and keep your chats private. This isn’t just another guide – it’s a battle‑tested recipe for keeping your Matrix chats private on Tor.
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Understanding the Sequence Systemd is the heartbeat of most modern Linux systems.When you run: you trigger a full chain of actions – not a single binary reload.Systemd reads unit definitions, resolves dependencies, checks targets, and updates logs.Knowing what happens gives you clarity when a service misbehaves. You don’t need to fight systemd. You just need to understand…
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It usually arrives out of nowhere. A person claiming to work for a domain registration center or network authority says another company wants to register your brand name as several .cn domains – maybe example.cn, example.com.cn, example.net.cn, and so on.
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The Forgotten Basics Modern dashboards look impressive. Yet, when systems fail, we return to the shell.The basics – ps, grep, awk, ip, nmcli, sed, uniq, sort – never left. They are still the quickest path between question and answer. This post is not nostalgia. It’s about precision, control, and speed.The old tools survive because they do exactly…
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Backups feel safe, but they are only useful if you can restore them when the unexpected occurs.Many operators treat backups as a safety net; few test that net for real resilience.
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When a stakeholder looks at the org chart, they see a line of titles that rises like a ladder:junior engineer → senior engineer → lead → architect. The assumption is simple: tenure equals expertise. That ledger is wrong.
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Code is the shield and the blade. A single line of script can stop an exploit or create one.
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We used to think of privacy as secrecy.Something for spies, activists, or people with something to hide.That mindset doesn’t fit the world we live in anymore. Today, privacy is choice – the ability to decide what others see about you, when, and how.
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