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HowTo: Monitor Linux / BSD System Over Time Without Scrolling Output

You can use the watch command to execute a program or shell script periodically, display its output on screen repeatedly. This allows you to watch the program output change over time. By default, the...

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How do I find out Linux Resource utilization to detect system bottlenecks?

Q. How can I find out Linux Resource utilization using vmstat command? How do I get information about high disk I/O and memory usage? A. vmstat command reports information about processes, memory,...

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Linux find the memory used by a program / process using pmap command

You can find the memory used by a program (process) by looking into /proc directory or using standard command such as ps or top. However, you must calculate all memory usage by hand i.e. add Shared...

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How To Monitor Linux and Windows Server And Network Using Nagios

Nagios is free, open source host, service and network monitoring services. Nagios provides an extensible framework, that can monitor pretty much anything using plugins.

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Nagios: System and Network Monitoring Book

The convenience and reliability that monitoring programs offer system administrators is astounding. Whether at home, commuting, or on vacation, admins can continuously monitor their networks, learning...

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A cautionary tale about locking Linux & FreeBSD user accounts

Like every other solo developer and sysadmin, I do stuff using ssh. Some stuff is automated using scripts, and others require ssh login. For example, one of my scripts logs into my Linux and FreeBSD...

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How to protect Linux against rogue USB devices using USBGuard

usbgurd You deployed a perfect firewall and other network security policies preventing unauthorized access to the user's desktop computer over a network. However, you still need to block USB device...

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DNS settings to avoid email spoofing and phishing for unused domain

As you may know, email spoofing allows attackers to pose as someone else to gain illegal profit. For example, I only use webmaster@cyberciti.biz for communication, but someone might create a...

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How To Set Up SSH Keys With YubiKey as two-factor authentication (U2F/FIDO2)

Patreon users download the PDF version. All Linux and Unix servers are managed manually or by automation tools such as Ansible using ssh. For example, say you have a server at Linode or AWS. Then you...

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How to skip ChatGPT from WireGuard or OpenVPN on Linux

nixCraft Patreon supporters can download the PDF version here. ChatGPT (short for Chat Generative Pre-trained Transformer) is a chatbot by OpenAI. It provides answers to your queries using learning...

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nvtop – Awesome Linux task monitor for NVIDIA, AMD & Intel GPUs

Love this? sudo share_on: Twitter - Facebook - LinkedIn - Whatsapp - Reddit The post nvtop – Awesome Linux task monitor for NVIDIA, AMD & Intel GPUs appeared first on nixCraft.

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How to upgrade FreeBSD 13.1 to 13.2 release

The FreeBSD Release Engineering Team is announcing the availability of FreeBSD version 13.2-RELEASE on 11/April/2023. It is the third release of the stable/13 branches. I updated my FreeBSD version...

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Setting up VSCode for Ansible Lightspeed AI in Ubuntu 22.04 desktop

Red Hat launched the Ansible Lightspeed Code Assistant Generative AI with IBM Watson Code Assistant in May 2023. This preview is now available to all Ansible users, allowing them to explore the...

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Debian Linux 12.1 released with Security Updates

Debian Linux project announces the first update of the Debian project's stable distribution, Debian 12 (codename "bookworm") named Debian 12.1. This update mainly addresses security issues and...

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How to block AI Crawler Bots using robots.txt file

Are you a content creator or a blog author who generates unique, high-quality content for a living? Have you noticed that generative AI platforms like OpenAI or CCBot use your content to train their...

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