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.

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Amazons’s cloud computing & web hosting service.

Amazon RDS now supports ENA Express for Multi-AZ replication

26 May 2026 @ 7:00 pm

Amazon RDS Multi-AZ instances now use ENA Express for replication traffic between Availability Zones. ENA Express uses AWS's Scalable Reliable Datagram (SRD) protocol to optimize network performance by delivering up to 25 Gbps single-flow bandwidth for cross-AZ replication traffic leveraging advanced congestion control and multi-pathing capabilities, and reducing latency variability for Multi-AZ deployments. RDS Multi-AZ instances replicate data synchronously to a standby in a different Availability Zone to provide high availability and automatic failover. AWS SRD, used by ENA Express, improves replication by dynamically distributing traffic across multiple network paths and adapting to congestion in real time. Amazon RDS Multi-AZ with ENA Express delivers increased write throughput and lower write latencies for write-intensive database workloads. ENA Express for Amazon RDS is avail

Amazon EC2 M8i and M8i-flex instances are now available in AWS GovCloud (US-East) Region

26 May 2026 @ 4:00 pm

Starting today, Amazon EC2 M8i and M8i-flex instances are now available in AWS GovCloud (US-East) Region. These instances are powered by custom Intel Xeon 6 processors, available only on AWS, delivering the highest performance and fastest memory bandwidth among comparable Intel processors in the cloud. The M8i and M8i-flex instances offer up to 15% better price-performance, and 2.5x more memory bandwidth compared to previous generation Intel-based instances. They deliver up to 20% better performance than M7i and M7i-flex instances, with even higher gains for specific workloads. The M8i and M8i-flex instances are up to 30% faster for PostgreSQL databases, up to 60% faster for NGINX web applications, and up to 40% faster for AI deep learning recommendation models compared to M7i and M7i-flex instances. M8i-flex are the easiest way to get price performance benefits for a majority of general-purpose workloads like web and application servers, microservices, small and med

Amazon EC2 R8i and R8i-flex instances are now available in AWS GovCloud (US-East) Region

26 May 2026 @ 4:00 pm

Starting today, Amazon Elastic Compute Cloud (Amazon EC2) R8i and R8i-flex instances are available in the AWS GovCloud (US-East) Region. These instances are powered by custom Intel Xeon 6 processors, available only on AWS, delivering the highest performance and fastest memory bandwidth among comparable Intel processors in the cloud. The R8i and R8i-flex instances offer up to 15% better price-performance, and 2.5x more memory bandwidth compared to previous generation Intel-based instances. They deliver 20% higher performance than R7i instances, with even higher gains for specific workloads. They are up to 30% faster for PostgreSQL databases, up to 60% faster for NGINX web applications, and up to 40% faster for AI deep learning recommendation models compared to R7i. R8i-flex, our first memory-optimized Flex instances, are the easiest way to get price performance benefits for a majority of memory-intensive workloads. They offer the most common sizes, from large to 16xlarge, an

Amazon VPC IPAM now supports tags on IPAM pool allocations

26 May 2026 @ 1:00 pm

Amazon VPC IP Address Manager (IPAM) now supports tags on IPAM pool allocations, enabling customers to organize, govern, and control access to individual IP address allocations using the same tagging workflows they use across other AWS resources. Amazon VPC IP Address Manager (IPAM) helps customers plan, track, and monitor IP addresses across their AWS environments. With this launch, customers can tag allocations at creation time or add tags to existing allocations. These tags can be referenced in AWS Identity and Access Management and Service Control Policies, enabling centralized governance over IP address usage at scale. For example, a network administrator can tag allocations by environment and enforce an IAM policy that allows only the production networking role to allocate from the pool, while development teams are restricted to development pools. Customers can also search and filter allocations by tag across all IPAM pools, making it faster to locate specific IP addre

Amazon GuardDuty Malware Protection for AWS Backup supports Amazon S3 continuous backups

26 May 2026 @ 10:00 am

Amazon GuardDuty Malware Protection for AWS Backup is now available for Amazon S3 continuous backups. You can now scan your S3 continuous backups for malware and identify clean points in time across your entire backup timeline for safe recovery. You can enable full or incremental malware scans for S3 continuous backups within your backup plan, and run on-demand scans up to any restorable point in time. You can now query the malware scan status at any point in time within your continuous backup using the new GetPITRMalwareScanResults API, allowing you to verify whether a specific recovery time is clean before initiating a restore. Support for S3 continuous backups is available in all AWS Regions where Amazon GuardDuty Malware Protection for AWS Backup is supported. You can get started using the AWS Backup console, API, or CLI. To learn more, visit the

Amazon SageMaker Unified Studio adds interactive interface for managing Feature Store in IAM Domains

22 May 2026 @ 8:07 pm

Amazon SageMaker Unified Studio IAM domains now includes an interactive interface for creating and managing feature groups in SageMaker Feature Store, eliminating the need to write code for common feature management tasks. This launch makes feature management accessible to data scientists, ML engineers, and business analysts from a single collaborative environment. Features are the inputs to ML models used during training and inference. For example, a music recommendation app might use features like song ratings, listening duration, and listener demographics to personalize which songs are suggested to each user. With this interactive interface for creating and managing features, you can now discover and search existing features, create and modify feature groups, view definitions and schemas, monitor data ingestion status - all without writing API calls. Features created elsewhere appear immediately in SageMaker Unified Studio when sharing the same IAM role, ensuring seamless

Amazon SageMaker expands domain management across domain types

22 May 2026 @ 7:30 pm

Amazon SageMaker Unified Studio now provides domain management experience for Identity Center and IAM-based domains outside of AWS console, allows administrators and data management teams to create and manage projects, configure workforce identity, manage users and permissions, and set networking properties for projects. Previously, this was only available for IAM based domains. With this launch, administrators of Identity Center-based domains can access domain management capabilities in SageMaker Unified Studio portal to create projects with configurable execution roles that define which AWS analytics, AI, and ML services the project can access. VPC configuration is consistent across both domain types, inherited by all projects, and can be edited to change the VPC, subnets, or security group. Administrators can also manage associated accounts, enabling users to publish and consume data from other AWS accounts within SageMaker Unified Studio. These features are ava

New agentic migration assessment capabilities now available with AWS Transform

22 May 2026 @ 6:58 pm

AWS Transform now offers advanced migration assessment capabilities including what-if scenarios, customizable assumptions, flexible file format support, and multiple new total cost of ownership (TCO) assessment features. These latest features let you quickly build a migration business case and accelerate your migration decisions. You can start your migration assessment with whatever data you have including RVTools exports, CMDB data, exports from the AWS Transform discovery tool, and a wide variety of third-party discovery tools. Create what-if scenarios for your migrations with customized assumptions including region, resource utilization, and service mapping. You can also compare scenarios and find the best path for your AWS migration. This latest release lets you include multiple analyses in your what-if scenarios including cost modelling of EC2, FSx, S3, SQL Server on EC2, and virtual desktops. On top of this, you can enhance your assessment with the inclusion of additi

Amazon SageMaker adds business metadata and governance in IAM-based domains

22 May 2026 @ 6:24 pm

Amazon SageMaker Unified Studio now supports business context, metadata and data governance capabilities in IAM-based domains. With this launch, customers using Amazon SageMaker IAM-based domains can add business context to their AWS Glue Data Catalog tables, including business names, descriptions, and README documentation. They can use AI-generated metadata to produce business names and descriptions automatically, reducing the effort of cataloging large numbers of tables. Customers can also create business glossaries so that teams across the organization use consistent definitions for terms like "ARR" or "churn rate," and define metadata form templates to capture structured attributes such as data classification, retention policies, or ownership details. With this business context in place, data engineers, analysts, and data scientists can search for and discover tables across the entire domain, filter results b

AWS Security Agent adds verification scripts for pentest findings

22 May 2026 @ 5:21 pm

AWS Security Agent now generates verification scripts for penetration test findings, enabling security teams to independently reproduce and validate discovered vulnerabilities. Previously, teams manually followed reproduction steps from finding details. Now, AWS Security Agent automatically generates ready-to-run scripts for each confirmed finding. Teams download the script, configure environment variables, and execute it against their target system to verify the vulnerability, streamlining triage and accelerating remediation. Verification scripts include setup instructions, documented environment variables, and redacted sensitive values. Available in all AWS Regions where AWS Security Agent is supported. To get started, run a penetration test, navigate to findings, and expand the Verification Script section. To learn more, see

networkworld.com

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Information, intelligence and insight for Network and IT Executives.

Cisco redefines ‘job-ready’ for network engineers with its certification overhaul

26 May 2026 @ 5:00 pm

Cisco is revamping its flagship Cisco Certified Network Associate (CCNA) certification for the first time in seven years, adding a new AI literacy pillar, more hands-on lab requirements, and a security-first mindset to a credential held by more than 1.8 million professionals worldwide. It’s also adding a new AI-focused module to the expert-level Cisco Certified Internetwork Expert (CCIE) practical exam. The changes represent

2026 network outage report and internet health check

26 May 2026 @ 4:16 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,

IBM plans $2B quantum chip foundry; government will pay half

22 May 2026 @ 5:29 pm

The US government has awarded IBM $1 billion to help establish the first purpose-built quantum chip fabrication unit in the US. The Trump administration’s investment is being matched by IBM itself and will result in the establishment of a new company called Anderon. The new business will build its factory in Albany, New York. IBM has pioneered quantum computing for decades. “Our work in silicon wafer fabrication has been a key to IBM’s success and will

Cisco: AI traffic is radically reshaping WANs

22 May 2026 @ 2:43 pm

AI agents generate up to 450% more network traffic than humans can, and they’re beginning to reshape network traffic patterns in measurable ways. Enterprise network traffic without agentic AI is expected to grow 2.5x in the next decade — agentic AI adoption will push that growth to 9x compared to current traffic levels, driven by autonomous task execution and inference-heavy workflows, according to new research from Cisco. Cisco’s new study, AI Impact on Wide Area Networks 2026, finds AI and agentic AI will not only increa

xAI-Anthropic deal signals the rise of AI compute as a standalone business

22 May 2026 @ 8:47 am

New SpaceX IPO filings suggest frontier AI firms are beginning to treat compute infrastructure as a standalone commercial business, with Elon Musk’s xAI agreeing to provide large-scale AI capacity to competitor Anthropic. The filing disclosed that Anthropic agreed to purchase compute services delivered through xAI’s Colossus and Colossus II AI infrastructure clusters through May 2029 under an agreement valued at roughly $1.25 billion per month. The arrangement is notable because Anthropic competes directly with xAI in the market for frontier AI models and enterprise AI services, suggesting at least some AI developers are increasingly willing to buy large-scale compute capa

Critical vulnerability in Cisco Secure Workload rated at maximum severity

21 May 2026 @ 10:43 pm

A critical vulnerability in the on-premises version of the Cisco Secure Workload security platform could allow a threat actor to obtain the privileges of a site admin, enabling them to compromise endpoints and read or modify configuration data. “CSOs need to drop what they are doing and patch this immediately,” warned consultant Robert Enderle, who heads the Enderle Group. “Cisco Secure Workload manages zero trust, micro-segmentation, and enterprise-wide network visibility. If an attacker controls the platform that dictates your security policies, they effectively own the map and

Cisco’s new certs are a wake-up call for AI-era network engineers

21 May 2026 @ 6:55 pm

Cisco is reshaping its certification portfolio to reflect an AI-first world, with major updates to CCNA and CCIE that explicitly bake AI, automation, and “human skills” into the learning path. These changes matter not only as exam tweaks but also as a signal of how the role of the network, and the people who run it, is changing in the AI era. What Cisco is changing Cisco is rolling out AI-drive

Microsoft plans significant update to Windows Secure Boot

21 May 2026 @ 6:33 pm

Microsoft is about to make a significant upgrade to its Secure Boot system, and if enterprise customers have not gotten started on the upgrade, they are already behind. Secure Boot is a Windows subsystem that verifies that each driver is signed by a trusted certificate on startup. If something doesn’t match, it gets blocked. For enterprise networking customers, Microsoft Secure Boot enhancements are important because the system defends against firmware-level attacks, bootkits, ransomware, and pr

Forward launches Predict to take the guesswork out of network changes

21 May 2026 @ 12:54 pm

Forward (formerly Forward Networks) has been building out technology for a decade to help enterprises better understand their network traffic. In January, the company launched an agentic AI system built on its network digital twin, giving operators a mathematically grounded way to query, verify, and automate workflows across multi-vendor environments. The company is now extending that foundation with Forward Predict, a capabi

Network jobs watch: Hiring, skills and certification trends

21 May 2026 @ 11:58 am

Network and infrastructure roles continue to shift as enterprises adopt technologies such as AI-driven network operations, multicloud networking, zero trust network access (ZTNA), and SD-WAN. Here’s a recap of some of the latest industry research, hiring s

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

How to Register a Domain Name in the UK

26 May 2026 @ 10:04 am

A Complete Guide for 2026 Your domain name is your address on the internet. It’s how customers find you, how your email works, and it’s often the first impression a... The post How to Register a Domain Name in the UK appeared first on Heart Internet.

What we’ve been doing to improve the reseller experience

18 May 2026 @ 10:53 am

A lot has been changing at Heart Internet, with major improvements across our platform, products, security, infrastructure and support. We’ve completed a major transition to fully independent operations, launched new... The post What we’ve been doing to improve the reseller experience appeared first on Heart Internet.

Unique Domain Extensions You Might Not Have Heard Of

15 May 2026 @ 10:30 am

The post Unique Domain Extensions You Might Not Have Heard Of appeared first on Heart Internet.

Business Email and Website Hosting

8 May 2026 @ 10:30 am

The post Business Email and Website Hosting appeared first on Heart Internet.

What Is the Future of the Internet?

1 May 2026 @ 10:30 am

The post What Is the Future of the Internet? appeared first on Heart Internet.

Copy Fail Linux Vulnerability (CVE-2026-31431)

30 April 2026 @ 2:43 pm

On 29 April 2026, security researchers at Theori (Xint Code) publicly disclosed CVE-2026-31431, known as “Copy Fail.” It is a local privilege escalation flaw in the Linux kernel’s AF_ALG cryptographic... The post Copy Fail Linux Vulnerability (CVE-2026-31431) appeared first on Heart Internet.

How to Reduce the Bounce Rate of Your WordPress Site

24 April 2026 @ 10:30 am

The post How to Reduce the Bounce Rate of Your WordPress Site appeared first on Heart Internet.

How to Check for Available Domains

31 March 2026 @ 1:48 pm

The post How to Check for Available Domains appeared first on Heart Internet.

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.

serverfault.com

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

Apache server behind reverse proxy redirecting incorrectly

26 May 2026 @ 7:54 pm

Let's say I have a reverse proxy server (proxy) and a backend server actually handling the traffic (backend). I use a reverse SSH tunnel to send the traffic to the backend server. So I setup the proxy server like this: ProxyPass "/" "http://localhost:8080/" ProxyPassReverse "/" "http://localhost:8080/" I enabled the correct Apache modules, and all was good. However, I noticed an issue. If I specified a redirect like so: Redirect permanent /index.html /w/index.php Accessing the backend server without the proxy causes the redirect to work correctly (e.g. http://backend redirects to http://backend/w/index.php), but accessing it through the proxy server causes it to redirect to http://localhost/w/index.php instead, which shouldn't be happening. My SSH tunnel runs on the backend server, and

.de domain shows "active" in RDAP but TLD registry return NXDOMAIN

26 May 2026 @ 3:43 pm

I am having an issue with a .de domain genieglobal-workforce.de registered through GoDaddy. My nameservers are hosted on DigitalOcean. The domain appears completely valid and active in the registry's RDAP database, but the actual .de zone file does not contain my domain, resulting in an NXDOMAIN from the TLD root servers. It has been several hours since the last update. I have verified that My DigitalOcean zone file is fully configured with valid $ORIGIN, $TTL, SOA, NS, and A records and there is no DNSSEC issue either. So what is the problem? whois command say the domain is active Domain: genieglobal-workforce.de Status: connect Querying the DENIC RDAP shows the status as active and correctly lists my DO nameservers: { "rdapConformanc

How to upload files that contain special characters/non english using curl in Powershell? [migrated]

26 May 2026 @ 2:41 am

I'm trying to upload a file that contain special characters & non-english letters using curl in Powershell but it's unable to read/open the file. Error gives this: curl: (26) Failed to open/read local data from file/application The command I used is this: [Console]::OutputEncoding = [System.Text.Encoding]::UTF8; $OutputEncoding = [System.Text.Encoding]::UTF8; curl.exe -F "sess_id=xxxxxx" -F "utype=prem" -F "to_folder=28890" -F "file_0=@C:\Users\Administrator\Desktop\OST\Complete\[2026.05.25] 学園アイドルマスター 初星学園 Remix Album「ReCollection」vol.1 [FLAC 48kHz/24bit].zip" "https://d300.userdrive.org/cgi-bin/upload.cgi?upload_type=file&utype=anon" I tested this by renaming the file so the path does exist it just can't read special characters. Is there any fix for this?

NginX: How can I deny an IP address on the server level for subdomains?

25 May 2026 @ 6:47 pm

I have a website for a domain which should be reachable from all IP addresses. But I would like to block some IP addresses from all subdomains. Therefore I created two server blocks. One handles all requests going to www.example.com or example.com. The other handles all requests going to all subdomains. The correct server block gets selected. When I insert deny all; and allow all; in the server blocks, always the option specified in the default server block gets used. In the example below, all connections of the domains www.example.com, example.com, and the subdomains get denied. Even if the domains www.example.com and example.com allow access. stream { map $ssl_preread_se

Docker can't connect to another node; rpc error

25 May 2026 @ 5:55 pm

On the (4) nodes of my Docker swarm, I'm getting a strange error message about an RPC error all the time. Yesterday, I haven't had id: This is the error message I get in the journal: dockerd[2108]: time="2026-05-25T19:48:52.521267521+02" level=error msg="agent: session failed" backoff=8s error="rpc error: code = Unavailable desc = connection error: desc = "transport: Error while dialing: dial tcp 10.20.0.11:2377: connect: connection refused"" module=node/agent node.id=1c6zmjxzafyj9rgwbd0qsp5g6 This is what is running at least on one of the nodes: mixtile@blade3n1:~$ docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES a9dfdf57f3e7 af0c5903e901 "/usr/bin/ceph-osd -…" 25 minutes ago Up 25 minutes ceph-8aad3073-39a1-11f1

XCP-ng 8.3 storage bottleneck on Pure FlashArray (iSCSI Active/Active MPIO)

25 May 2026 @ 1:28 pm

I am experiencing a hard storage performance ceiling on XCP-ng 8.3 with a Windows Server VM running on an all-flash Pure Storage FlashArray via iSCSI (lvmoiscsi). Inside the guest OS (with official PV drivers active), RND4K Q32T1 performance is completely hard-capped at exactly ~34 MB/s (~8,500 IOPS) and SEQ1M Q8T1 stalls at ~744 MB/s. Physical & Multipath Configuration: Our infrastructure is fully redundant and configured as follows: Network: 2x 10GbE physical interfaces per host, dedicated to iSCSI storage. Fabric: Dual-subnet iSCSI storage network. Paths: 4 active paths connected to the Pure controllers, properly discovered and aggregated by device-mapper-multipath: All 4 paths are in active ready status using the queue-length 0 load-balancing policy. It strongly looks like we are hitting a hypervisor-level queue depth or single-threaded tapdisk limit that prevents a s

Windows Server 2025 began to restart around once a week

24 May 2026 @ 7:18 pm

Our Windows Server 2025 began in the last 2 weeks to restart while nobody was working and we want to know what the reason could be. The server is activated and licensed. The server is running for around 15 months and never showed this behaviour. It started "suddenly". My question is: Where can we check what the reason can be for the last restart? Update: Applying the filter according to @dawidw comment, I get the below results which were when the server restarted. I don't understand them, I can't interpret them. Does somebody see a reason for the restart? Log Name: System Source: Microsoft-Windows-Kernel-Power Date: 2026-05-24 12:45:30 Event ID: 566 Task Category: (268) Level: Information Keywords: (1024),(512),(4) User: SYSTEM Computer: ***.local Description: The system session has transitioned from 0 to 1. Reason SessionUnlock BootId:

How to automatically connect and setup vpn?

24 May 2026 @ 6:41 pm

Most networkManager frontends have an option to "Automatically connect to vpn x when this connection is up", option, but they never work. kde frontend screenshot KDE just fail the entire connection. The one on gnome sets up the base connection and just silently ignores the vpn option. etc. Is there a way to make these work? why all frontends have this option if it never works?

How to view Apache documentation revisions locked on their SVN?

24 May 2026 @ 2:16 pm

How can the public view Apache documentation revisions, e.g., https://svn.apache.org/viewvc?view=revision&revision=1933715 Is there an alternate URL open to the public read-only? No, I don't want to sign up for an SVN account. I want e.g., a GitHub mirror link I can share that is readable without an account. One would think https://infra.apache.org/svn-basics.html#accessing holds the answer. Alas...

Least privilege setup for windows_exporter and wuaserv

24 May 2026 @ 1:16 pm

I'm using the bundled windows_exporter inside Grafana's Alloy service for monitoring purposes of my Windows VMs. I do not wish to run this as local admin, and am running this service as a gMSA. This works perfectly with membership of the following groups: Event Log Readers Performance Log Readers However the 'update' collector for windows_exporter makes a call to GetTotalHistoryCount against wuauserv that fails for the gMSA but succeeds for all regular users (including users not in the local administrators group). this powershell script tested as a non-admin user runs perfectly, however for the gMSA I recieve the error: FAILED at last step above: Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED)) Exception type: System.UnauthorizedAccessException HResult: 0x80070005 The script I'm using: try { Log "Creating Microsoft.Update.Session COM object..." $se

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Cheap dedicated server hosting

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