explainshell.com

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Match linux command-line arguments to view their help text.

stackshare.io

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Dev / Production stacks for all to see. Handy tool to see what software is trending today.

aws.amazon.com

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Amazons’s cloud computing & web hosting service.

Amazon Redshift increases performance for new queries in dashboards and ETL workloads by up to 7x

18 March 2026 @ 1:00 pm

Amazon Redshift improves the performance of BI dashboards and ETL workloads by speeding up new queries by up to 7x. This significantly improves the response times of low-latency SQL queries, such as those used in near real-time analytics applications, BI dashboards, ETL pipelines, and autonomous, goal-seeking AI agents. Customers experience substantially faster query response times as Redshift accelerates the process of preparing the SQL query for execution. Queries start faster and return results quicker. This improvement is automatically enabled at no additional cost. To deliver this major improvement, Redshift added a new optimization to query compilation where new queries are processed immediately using composition. Composition is a technique that generates a lightweight arrangement of pre-existing logic while simultaneously creating highly optimized, query-specific code that is compiled and executed across available compute

Amazon OpenSearch Service now supports OpenSearch version 3.5

18 March 2026 @ 3:30 am

You can now run OpenSearch version 3.5 on Amazon OpenSearch Service. OpenSearch 3.5 introduces significant improvements in agentic AI capabilities, search relevance tooling, and observability features to help you build powerful agentic applications. With this launch, agentic conversation memory captures conversation context and tool reasoning in persistent storage, enabling your agents to provide coherent, accurate responses across multi-turn conversations. In addition to this, context management optimizes what you send to large language models (LLMs) through automatic truncation and summarization, reducing your token costs while maintaining response quality. Finally a redesigned no-code agent interface supports Model Context Protocol (MCP) integration, searc

Amazon Connect expands agentic speech-to-speech voice experiences to the London (Europe) region and adds three new voices

18 March 2026 @ 12:42 am

Amazon Connect now offers agentic speech-to-speech voice experiences in an additional AWS Region: Europe (London). Amazon Connect also adds three new speech-to-speech voices across US Spanish and UK English: Pedro (es-US), Amy (en-GB), and Brian (en-GB). Amazon Connect's agentic self-service capabilities enable AI agents to understand, reason, and take action across voice and messaging channels to automate routine and complex customer service tasks. Connect's agentic speech-to-speech voice AI agents understand not only what customers say but how they say it, adapting voice responses to match customer tone and sentiment while maintaining natural conversational pace. With these updates, you can deliver agentic speech-to-speech voice experiences to customers across a new region with a wider selection of voices. To learn more about this feature, see the Amazon Connect 

Amazon Connect voice AI agents now supports 13 new languages

17 March 2026 @ 9:52 pm

Amazon Connect now supports 13 new languages for voice AI agents, bringing the total to 40 language locales.  New languages include Arabic (Saudi Arabia), Czech, Danish, Dutch (Belgium), English (Ireland), English (New Zealand), English (Wales), German (Switzerland), Icelandic, Romanian, Spanish (Mexico), Turkish, and Welsh. Amazon Connect's agentic self-service capabilities enable AI agents to understand, reason, and take action across voice and digital channels to automate routine and complex customer service tasks across multiple languages.   To learn more about this feature, see the Amazon Connect Administrator Guide. To learn more about Amazon Connect, a complete AI-powered contact center solution delivering personalized customer experiences at scale, visit the Amazon Connect 

Amazon SageMaker Unified Studio supports aggregated view of data lineage

17 March 2026 @ 9:10 pm

Amazon SageMaker Unified Studio now provides an aggregated view of data lineage, displaying all jobs contributing to your dataset. The aggregated view gives you a complete picture of data transformations and dependencies across your entire lineage graph, helping you quickly identify all upstream sources and downstream consumers of your datasets. Previously, SageMaker Unified Studio showed the lineage graph as it existed at a specific point in time, which is useful for troubleshooting and investigating specific data processing events. The aggregated view now provides a complete picture of data transformations and dependencies across multiple levels of the lineage graph. You can use this view to understand the full scope of jobs impacting your datasets and to identify all upstream sources and downstream consumers. The aggregated view is available as the default lineage view in Amazon SageMaker Unified Stu

AWS Blu Insights is now AWS Transform for mainframe refactor

17 March 2026 @ 6:30 pm

AWS Blu Insights capabilities are now available as part of AWS Transform, enabling customers to launch mainframe refactoring projects from the AWS Transform console. This launch unifies all three mainframe modernization patterns — refactor, replatform, and reimagine — within AWS Transform for mainframe. Code transformation is now offered at no cost, replacing the previous lines-of-code based pricing model. With this launch, you can access AWS Transform for mainframe refactor directly from the AWS Transform console using your existing AWS credentials. The mandatory three-level certification requirement to access the Transformation Center has been removed, lowering the friction to exploring refactor projects. Self-paced training content remains available within the application for those who want to build deeper knowledge. AWS Transform for mainframe refactor is available in 18 AWS Regions. In reg

SageMaker Training Plans now enables extending of existing capacity commitments without workload reconfiguration

17 March 2026 @ 6:30 pm

SageMaker Training Plans allows you to reserve GPU capacity within specified time frames in cluster sizes of up to 64 instances. Today, Amazon SageMaker AI announces that Training Plans can now be extended when your AI workloads take longer than anticipated, ensuring uninterrupted access to capacity. You can extend plans by 1-day increments up to 14 days, or 7-day increments up to 182 days (26 weeks). Extensions can be initiated via API or the SageMaker console. Once the extension is purchased the workload continues to run un-interrupted without you needing to reconfgure the workload. SageMaker AI helps you create the most cost-efficient training plans that fits within your timeline and AI budget. Once you create and purchase your training plans, SageMaker automatically provisions the infrastructure and runs the AI workloads on these compute resources without requiring an

Amazon MSK expands Express brokers to Africa (Cape Town) and Asia Pacific (Taipei) regions

17 March 2026 @ 5:00 pm

You can now create provisioned Amazon Managed Streaming for Apache Kafka (Amazon MSK) clusters with Express brokers in Africa (Cape Town) and Asia Pacific (Taipei) regions. Express brokers are a new broker type for Amazon MSK Provisioned designed to deliver up to 3x more throughput per broker, scale up to 20x faster, and reduce recovery time by 90% as compared to standard Apache Kafka brokers. Express brokers come pre-configured with Kafka best practices by default, support all Kafka APIs, and provide the same low-latency performance that Amazon MSK customers expect, so they can continue using existing client applications without any changes. To get started, create a new cluster with Express brokers through the Amazon MSK console or the Amazon CLI and read our Amazon MSK Developer Guide for more information.

Amazon Bedrock AgentCore Runtime now supports shell command execution

17 March 2026 @ 4:34 pm

Amazon Bedrock AgentCore Runtime now supports InvokeAgentRuntimeCommand, a new API that lets you execute shell commands directly inside a running AgentCore Runtime session. Developers can send a command, stream the output in real time over HTTP/2, and receive the exit code — without building custom command execution logic in their containers. AI agents often operate in workflows where deterministic operations such as running tests, installing dependencies, or executing git commands need to run alongside LLM-powered reasoning. Previously, developers had to build custom logic inside their containers to distinguish agent invocations from shell commands, spawn child processes, capture stdout and stderr, and handle timeouts. InvokeAgentRuntimeCommand eliminates this undifferentiated work by providing a platform-level API for command execution. Commands run inside the same container, filesystem, and environment as the agent session, and can execute concurrently with agent invoca

Amazon Corretto 26 is now generally available

17 March 2026 @ 3:00 pm

Amazon Corretto 26, a Feature Release (FR) version, is now available for download. Amazon Corretto is a no-cost, multi-platform, production-ready distribution of OpenJDK. You can download Corretto 26 for Linux, Windows, and macOS from our downloads page. Corretto 26 will be supported through October 2026. HTTP/3 Support - Java applications can now use the latest HTTP/3 protocol, which is faster and more efficient than older HTTP versions (JEP 517) Ahead-of-Time Object Caching - Applications can start up faster by pre-caching commonly used objects, working with any garbage collector (JEP 516) Enhanced Pattern Matching - Developers can write cleaner code when checking

networkworld.com

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Information, intelligence and insight for Network and IT Executives.

Lenovo bolsters hybrid AI platform with Nvidia GPUs

18 March 2026 @ 6:15 pm

Lenovo introduced an expansion of its Lenovo Hybrid AI Advantage with Nvidia at the GPU giant’s GTC trade show, positioning the portfolio as an end-to-end path for production AI inferencing. Lenovo said the expanded line of products are designed to accelerate AI adoption, reduce time-to-first-token (TTFT), and spans client devices to enterprise infrastructure and large-scale AI cloud deployments. Lenovo introduced inferencing acceleration at Lenovo Tech World in Janu

Fortinet’s AI-driven defense for a machine-speed era

18 March 2026 @ 4:35 pm

At the Fortinet Accelerate 2026 user conference in Las Vegas, the keynote speeches focused on the need to transform security as the traditional boundaries of the enterprise are dissolving. As organizations rush to embrace generative AI, hybrid work, and cloud-first strategies, they are inadvertently expanding an attack surface that is now being exploited by agentic AI in the hands of threat actors. Fortinet’s response to this shift has been its Security Fabric. At the event, the company announced the launch of FortiOS 8.0 and the expansion of its Security Operations Platform.

Microsoft’s laser-free cable tech promises to slash AI data center networking power bills

18 March 2026 @ 12:02 pm

Microsoft Research has developed MOSAIC, a MicroLED-based optical interconnect system for data centers that it estimates will use about 50% less energy than mainstream laser-based optical cables when deployed, the company said in a blog post. The figure is based on lab tests of the system combined with deployment estimates, Microsoft said in the post. MOSAIC was built at Microsoft’s Cambridge, UK, lab in collaboration with Azure Core, Azure Hardware Systems and Infras

Beyond the fan: Crossing the liquid cooling rubicon

18 March 2026 @ 9:00 am

The infrastructure inflection point The artificial intelligence (AI) infrastructure revolution has made an unlikely discipline suddenly relevant: thermodynamics. My perspective draws on a mechanical engineering background in advanced heat transfer, reinforced by a decade of leading data center transformations across Europe and ongoing conversations with technology executives navigating these challenges today. The views expressed are personal — not the position of any organization. The numbers tell the story. For the past decade, enterprise racks hummed along at 10 to 15 kilowatts (kW) each. Facilities teams

USAT to Distribute Digital Dollars to Thousands During St. Patrick’s Day Celebration in Times Square

18 March 2026 @ 8:23 am

This St. Patrick’s Day, USAT is putting digital currency directly into the pockets of thousands of New Yorkers. USAT, the digital dollar issued by Anchorage Digital Bank, is taking over Times Square as 2 million spectators flood the streets. The activation combines synchronized digital billboards with a street-level campaign designed to introduce digital dollar payments to a mainstream audience, coinciding with the New York City St. Patrick’s Day Parade. The campaign features coordinated imagery across Times Square’s digital screens, culminating in a synchronized share-of-voice takeover showing how digital dollars move between people in an instant. Brand ambassadors will distribut

Nvidia targets inference as AI’s next battleground with Groq 3 LPX

18 March 2026 @ 1:46 am

2026 is predicted to be the year that AI moves from pilot to production, becoming measurably useful across the enterprise. But while many businesses are ready, the underlying infrastructure doesn’t seem to be, particularly when it comes to next-stage inferencing. Nvidia says it has overcome these limitations, achieving what it calls a “milestone” in accelerated computing. The chip company today unveiled the Nvidia Groq 3 LPX inference accelerator for Vera Rubin GPUs. The combined architecture is optimized for “trillion-parameter models and million-token context” that Nvidia claims can deliver up to 35X higher inference throughput per megawatt, and up to 10x more reve

HPE, Nvidia expand AI partnership

17 March 2026 @ 6:43 pm

HPE and Nvidia have boosted their partnership, adding a new server blade, GPU support, enhancements to HPE’s turnkey private AI package, and services targeting enterprise customers with growing AI workloads. A considerable portion of the HPE-related news coming from Nvidia’s GTC event is aimed at the high end of the AI workload spectrum and targets service providers and neocloud operators. For example, HPE announced its Nvidia Vera Rubin NVL72 rack-scale system (pictured) that it says is capable of supporting in excess of 1

Nvidia: Latest news and insights

17 March 2026 @ 5:25 pm

More processor coverage on Network World:Intel news and insights | AMD news and insights With its legacy of innovation in GPU technology, Nvidia

2026 network outage report and internet health check

17 March 2026 @ 4:51 pm

ThousandEyes, a Cisco company, monitors how ISPs, cloud providers and conferencing services are handling any performance challenges and provides Network World with a weekly roundup of events that impact service delivery. Read on to see the latest analysis, and stop back next week for another update on internet and cloud traffic performance. Note: We have archived prior-year outage updates, including our reports from 2025, 2024,

Cato Networks unveils GPU-powered SASE with native AI security controls

17 March 2026 @ 12:55 pm

Cato Networks this week launched two additions to its secure access service edge (SASE) platform that the company says will address security challenges enterprises are facing now: protecting the AI tools end users rely on, while also using AI to defend against sophisticated threats. Cato Neural Edge deploys Nvidia GPUs across the

forensicswiki.org

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Computer forensic tools and techniques used by investigators

cyberciti.biz

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online community of new and seasoned Linux / Unix sysadmins.

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heartinternet.co.uk

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Hosting packages for an initial web presence

SSL Certificates are changing. Here’s what you need to know.

17 March 2026 @ 10:12 am

The rules around SSL certificates are changing across the whole internet. The good news is that for most customers, very little will change on your side. This is an industry-wide... The post SSL Certificates are changing. Here’s what you need to know. appeared first on Heart Internet.

Hosting VPS Linux vs Windows VPS

9 March 2026 @ 3:03 pm

The post Hosting VPS Linux vs Windows VPS appeared first on Heart Internet.

Domain Name Transfer Checklist: Everything You Need to Know

3 March 2026 @ 2:56 pm

The post Domain Name Transfer Checklist: Everything You Need to Know appeared first on Heart Internet.

Heart Internet Win Gapstars Innovation Award 2026

23 February 2026 @ 11:57 am

We’re incredibly proud to celebrate our Site Reliability Engineering team, who have won the Gapstars Innovation Award for their outstanding work improving platform stability, security, and visibility across our shared... The post Heart Internet Win Gapstars Innovation Award 2026 appeared first on Heart Internet.

A/B Testing Explained: A Practical Guide To Better Results | Part 1

20 February 2026 @ 8:32 am

If you want to improve your website you probably need to do A/B testing, otherwise known as split testing. Instead of guessing, A/B testing allows you to experiment more scientifically.... The post A/B Testing Explained: A Practical Guide To Better Results | Part 1 appeared first on Heart Internet.

How to enable two-factor authentication (2FA) on your Heart Internet account

28 January 2026 @ 12:37 pm

Account security matters, and switching on two-factor authentication (2FA) is a quick win. 2FA adds a second check during the sign-in process, so even if someone compromises your password, they still can’t get in.  To enable 2FA:  Step 1: Open your... The post How to enable two-factor authentication (2FA) on your Heart Internet account appeared first on Heart Internet.

How to Choose the Perfect Domain Name for Your Business

9 July 2025 @ 9:30 am

Get Your Name Right – The Internet Never Forgets Choosing a domain name might sound simple – until you realise it’s the online equivalent of naming your child. No pressure.... The post How to Choose the Perfect Domain Name for Your Business appeared first on Heart Internet.

What is a VPS? And is it Time You Got One?

25 June 2025 @ 9:30 am

Discover what a VPS server is, how VPS hosting works, and why it’s ideal for small businesses. Learn the benefits and explore VPS plans with Heart Internet. The post What is a VPS? And is it Time You Got One? appeared first on Heart Internet.

We’re Now Certified by the Green Web Foundation

11 June 2025 @ 9:30 am

💚 Hosting that works hard, treads lightly.   Big news: Heart Internet is now officially listed with the Green Web Foundation. That means our hosting services are recognised as being... The post We’re Now Certified by the Green Web Foundation appeared first on Heart Internet.

What is Web Hosting and Why Does Your Business Need It?

6 May 2025 @ 4:54 pm

Without web hosting, your website would not be visible or accessible to users! It is crucial to host your website with a website hosting service to ensure that your business... The post What is Web Hosting and Why Does Your Business Need It? appeared first on Heart Internet.

serverfault.com

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Common Server issues – FAQs and answers from those in the know

Getting undefined error even though variable is set

18 March 2026 @ 12:35 pm

I’m running an Ansible playbook that installs coturn using a dynamic AWS inventory (aws_ec2 plugin). Setup Inventory: inventories/coturn/hosts.aws_ec2.yml (aws_ec2 plugin) Group vars file: inventories/coturn/group_vars/aws_ec2.yml Variables defined there: env: "stg" domain_name: "coturn.example.com" bucket_name: "bucket.com" coturn_git_ref: "docker/4.9.0-r0" I have a playbook that calls a role, in that role, have a step to setup a coturn. In the role: - name: clone coturn repo git: repo: https://github.com/coturn/coturn.git dest: /home/bot/coturn version: "{{ coturn_git_ref }}" I get: 'coturn_git_ref' is undefined Confusing part: other variables such as bucket_name (from the same group_vars/aws_ec2.yml) works fine. coturn_git_ref is not found Wh

IAP says "Failed to load IAP resources"

18 March 2026 @ 1:36 am

We have a small application on the App Engine app and use the Identity Aware Proxy (IAP) to control who can access the application. No changes have been made to the App Engine app or IAP. Since yesterday, the IAP is not able to show the resource of the App Engine App and says "Failed to load IAP resources". App Engine app is still running and can be accessed by members who had access to app earlier but no new members can be added. Any suggestions on where to start?

My VM won't turn on [closed]

17 March 2026 @ 6:01 pm

Since this morning, my two VMs, installed in different areas of Santiago, Chile, won't turn on. What can I do? A e2-standard-4 VM instance is currently unavailable in the southamerica-west1-a zone. Alternatively, you can try your request again with a different VM hardware configuration or at a later time. For more information, see the troubleshooting documentation.

Showing a webpage via SSH only

17 March 2026 @ 4:34 pm

I am setting up an Ubuntu server on EC2 that will be used as a production web server. I already installed PHP, Apache, and MariaDB. I also installed phpmyadmin. Please note phpmyadmin is located at /var/www/html/phpmyadmin (as a symlink). Assuming that the IP address of this server is 1.2.3.4 Then, if the user goes to https://1.2.3.4/phpmyadmin then this returns the phpmyadmin page (because as you are aware, the default page is served from /var/www/html). However, I want to limit this functionality, and be able to only access the phpmyadmin page if I create an SSH tunnel from my local computer. In other words, from my terminal on my local computer, I want open an SSH tunnel as such: ssh -i my-private-key.pem [email protected] -N -L 8888:127.0.0.1:80 So when using the browser, and entering

WireGuard VPN server in Cudy WR3000 router doesn't work, but OpenVPN does

11 March 2026 @ 7:56 am

I set up OpenVPN server on a Cudy WR3000 router, but I can't get WireGuard to work. The WireGuard handshake on the client shows "Sent" bytes but "0 Received" bytes. What I tested: OpenVPN Works: I enabled the OpenVPN server on the Cudy using port 1194. After forwarding 1194 on the ISP router, it works perfectly. This proves my Static IP and Port Forwarding logic are correct. Cross-Port Testing: I tried moving the WireGuard Listen Port to 1194, instead of default (after disabling OpenVPN), but still no handshake. MTU Adjustments: I lowered MTU to 1280 on both Server and Client to account for potential fragmentation/ISP overhead. Peer Settings: On the Cudy, I set the Peer "Remote Subnet" to 0.0.0.0/0 and "Allowed IPs" to 0.0.0.0/0. My .conf file of the cliend as automatically generated from cudy is:

DNS intermittently returns incorrect record for web site

13 February 2026 @ 5:23 pm

My network has a fortinet firewall and active directory with two windows 2019 servers (DHCP and DNS) and is connected to the Internet via two different ISPs (A and B) configured for load balancing. There is also an external web server connected to ISP A with two IPs: a public IP for external connections (Internet) and a private IP for internal connections (LAN). This is my configuration: LAN → Firewall → ISP A and ISP B Clients → private IP + DNS active directory servers IP DNS servers → public DNS forwarders (9.9.9.11 or 9.9.9.9) Web server → located in the ISP A network, public IP + private IP in the ISP A network The problem is that connections to the web server work fine from outside the network, but from within I am encountering a potential DNS rebind attack problem (only when the traffic is routed via ISP A, but DNS resolves FQDM to public IP). Moreover, if I use a VPN at browser or operating system level, the problem disappear. I think that the problem

SSH/SFTP won’t enable (checkbox reverts) — how to reset SSH without shell?

5 February 2026 @ 2:16 pm

I’m running Synology DSM 7.3.2-86009 Update 1 and can no longer enable SSH or SFTP — the checkbox immediately reverts after clicking Apply. enter image description here I’m logged in as admin and already performed a Mode-1 reset (network/admin reset), but the behavior didn’t change. SSH previously worked, and I had manually edited sshd_config to enable SFTP, so I suspect the SSH service is now broken and won’t start. Since I currently have no shell access, what’s the correct way to reset or repair the SSH service/configuration on DSM?

DNS issue with Asian Traffic

23 January 2026 @ 5:08 pm

I have a website which it's root domain is pointing to an IP address whose server is down. And the subdomain www version is pointing to a server that is reachable. So if I check both domains on dnschecker.org it shows that both domains they are not propagating in other locations in Asia. What could be causing the issue? Here are my domains thetechsupport.store and www.thetechsupport.store

How to reliably distinguish a real website outage from ISP / firewall / geo blocking?

30 December 2025 @ 11:42 pm

I'm looking for a reliable, repeatable way to confirm whether a website is actually down, or if the issue is caused by access restrictions rather than a service outage. Typical scenarios I've encountered: The site times out or fails to load from one network The same site is reachable from other regions or networks DNS resolves correctly, but HTTP requests fail Different HTTP status codes depending on source network Before escalating issues to hosting providers or making DNS / firewall changes, what are the best technical checks to perform to confidently determine: a true service outage vs ISP-level blocking firewall / WAF rules geo-based filtering routing issues What combination of signals (HTTP status, DNS, traceroute, multi-region checks) do you consider sufficient evidence of a real outage?

Domain blocked on Airtel & Jio DNS but works on other ISPs and public DNS

18 December 2025 @ 10:10 am

We recently re-launched our website and migrated it from an old Firebase project to a new Firebase project. Details: Domain: farefirst.com (existing domain, working for years) Registrar/DNS: GoDaddy Hosting: Firebase Hosting After updating the new Firebase IPs in GoDaddy: The site worked normally for a few days. Then it stopped loading on Jio, and later on Airtel networks. It still works fine on all other ISPs. Observation: On Airtel/Jio default DNS, the domain doesn’t load. ping www.farefirst.com on Airtel resolves to: Pinging dotblocking.dummy [13.127.247.216] Request timed out. If DNS is changed to Google (8.8.8.8) or Cloudflare (1.1.1.1), the site loads correctly on Airtel/Jio. This suggests ISP-level DNS blocking, not a hosting issue. Questions: Why would a legitimate domain ge

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Cheap dedicated server hosting

tagadab.com

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Cheap developer VPS hosting from £10