Feed aggregator

How to perform find and replace operations within a visual selection in Vim

nixCraft - Tue, 02/24/2026 - 15:35
Here's a quick tip for vim users. You can perform find and replace operations within a visual selection in Vim for text or code block. Visual selection for finding and replacing text in Vim allows developers and Linux/Unix users precise and efficient text editing. It's handy when you want to change specific portions of text or code blocks within a larger file without affecting other occurrences. This method required to minimizing manual search and reducing the risk of unintended code or text modifications. Let us see how to find and replace in Vim visual mode selection. Love this? sudo share_on: Twitter - Facebook - LinkedIn - Whatsapp - Reddit The post How to perform find and replace operations within a visual selection in Vim appeared first on nixCraft. 2024-05-07T06:14:33Z 2024-05-07T06:14:33Z Vivek Gite

How to find hidden processes and ports on Linux/Unix/Windows

nixCraft - Tue, 02/24/2026 - 15:35
Unhide is a little handy forensic tool to find hidden processes and TCP/UDP ports by rootkits / LKMs or by another hidden technique. This tool works under Linux, Unix-like system, and MS-Windows operating systems. Love this? sudo share_on: Twitter - Facebook - LinkedIn - Whatsapp - Reddit The post How to find hidden processes and ports on Linux/Unix/Windows appeared first on nixCraft. 2024-05-07T05:05:51Z 2024-05-07T05:05:51Z Vivek Gite

How to add bash auto completion in Debian Linux

nixCraft - Tue, 02/24/2026 - 15:35
Bash is a command language interpreter compatible with sh. It can execute commands read from a file or keyboard. On Debian Linux, bash-completion is a set of shell functions that uses Bash's programmable completion feature. This page provides instructions on installing and enabling Bash auto-completion on Debian Linux versions 10, 11, and 12 to increase productivity by writing custom bash code. Love this? sudo share_on: Twitter - Facebook - LinkedIn - Whatsapp - Reddit The post How to add bash auto completion in Debian Linux appeared first on nixCraft. 2024-05-06T15:51:25Z 2024-05-06T15:51:25Z Vivek Gite

How to add cron job entry for acme.sh

nixCraft - Tue, 02/24/2026 - 15:35
Recently, I had a learning experience with cron jobs and acme.sh. acme.sh is an excellent tool that simplifies the management of Let's Encrypt TLS (SSL) certificates. It makes obtaining and renewing these essential security certificates for your web server easier. Recently, I moved my server from Linode to AWS, which was a new environment for me. Initially, everything appeared to be working correctly, and I assumed everything was running smoothly. However, I forgot to migrate the cron job that acme.sh uses to renew the certificate automatically. This oversight caused my Let's Encrypt certificates to expire, resulting in security warnings and potential disruptions for visitors to my website. Opps! Love this? sudo share_on: Twitter - Facebook - LinkedIn - Whatsapp - Reddit The post How to add cron job entry for acme.sh appeared first on nixCraft. 2024-05-03T06:43:12Z 2024-05-03T06:43:12Z Vivek Gite

How to Upgrade Ubuntu 22.04 to 24.04 LTS: A Complete Guide

nixCraft - Tue, 02/24/2026 - 15:35
{nixCraft Patreon supporters content}Below is a sneak peek of this content! Ubuntu 24.04 LTS (Noble Numbat) was launched on April 25th, 2024. This new version will be supported for five years until June 2029. The armhf architecture now provides support for the Year 2038 problem. The upgrades include significant updates to core packages like Linux kernel, systemd, Netplan, […]The post How to Upgrade Ubuntu 22.04 to 24.04 LTS: A Complete Guide appeared first on Opensource Flare✨. 2024-04-26T18:25:08Z 2024-04-26T18:25:08Z Vivek Gite

How to Upgrade Ubuntu 22.04 to 24.04 LTS: A Complete Guide

nixCraft - Tue, 02/24/2026 - 15:35
Ubuntu 24.04 LTS (Noble Numbat) was launched on April 25th, 2024. This new version will be supported for five years until June 2029. The armhf architecture now provides support for the Year 2038 problem. The upgrades include significant updates to core packages like Linux kernel, systemd, Netplan, toolchain upgrades for better development support, enhanced security measures, and performance optimizations. It also has an updated GNOME desktop environment and other default applications. Let us see how to upgrade Ubuntu 22.04 LTS to Ubuntu 24.04 LTS using the CLI over ssh-based session. Love this? sudo share_on: Twitter - Facebook - LinkedIn - Whatsapp - Reddit The post How to Upgrade Ubuntu 22.04 to 24.04 LTS: A Complete Guide appeared first on nixCraft. 2024-04-26T08:33:21Z 2024-04-26T08:33:21Z Vivek Gite

How to configure AWS SES with Postfix MTA on Debian Linux

nixCraft - Tue, 02/24/2026 - 15:35
AWS SES (Amazon Simple Email Service) is a cloud-based email-sending service that is both reliable and cost-effective. This service is offered by Amazon Web Services. Postfix is a popular email server for Debian and Unix-like systems. It is an open-source Mail Transfer Agent (MTA) responsible for routing and delivering emails. Debian Linux is a widely used Linux distribution known for its stability and user-friendliness for server usage. Let us see how to integrate AWS SES with the Postfix MTA on Debian Linux version 11/12. Love this? sudo share_on: Twitter - Facebook - LinkedIn - Whatsapp - Reddit The post How to configure AWS SES with Postfix MTA on Debian Linux appeared first on nixCraft. 2024-04-19T07:04:06Z 2024-04-19T07:04:06Z Vivek Gite

The repository ‘http://deb.debian.org/debian buster-backports Release’ no longer has a Release file.

nixCraft - Tue, 02/24/2026 - 15:35
When you run the sudo apt update, you may see the following message or error on a Debian Linux: Err:5 http://deb.debian.org/debian buster-backports Release 404 Not Found [IP: 146.75.34.132 80] Reading package lists... Done E: The repository 'http://deb.debian.org/debian buster-backports Release' no longer has a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. Here is how to fix this issue. Love this? sudo share_on: Twitter - Facebook - LinkedIn - Whatsapp - Reddit The post The repository ‘http://deb.debian.org/debian buster-backports Release’ no longer has a Release file. appeared first on nixCraft. 2024-04-14T20:42:01Z 2024-04-14T20:42:01Z Vivek Gite

How do I find out my timezone in Linux?

nixCraft - Tue, 02/24/2026 - 15:35
You can find the timezone in Linux using the command line. The easiest way to do this is to type the "timedatectl" command and look for the "timezone" line when using modern Linux distros with systemd. There are other commands and ways to temporarily switch to a new timezone for date calculations. Love this? sudo share_on: Twitter - Facebook - LinkedIn - Whatsapp - Reddit The post How do I find out my timezone in Linux? appeared first on nixCraft. 2024-04-06T01:06:44Z 2024-04-06T01:06:44Z Vivek Gite

CrowdStrike Says Attackers Are Moving Through Networks in Under 30 Minutes

Slashdot.org - Tue, 02/24/2026 - 15:00
An anonymous reader shares a report: Cyberattacks reached victims faster and came from a wider range of threat groups than ever last year, CrowdStrike said in its annual global threat report released Tuesday, adding that cybercriminals and nation-states increasingly relied on predictable tactics to evade detection by exploiting trusted systems. The average breakout time -- how long it took financially-motivated attackers to move from initial intrusion to other network systems -- dropped to 29 minutes in 2025, a 65% increase in speed from the year prior. "The fastest breakout time a year ago was 51 seconds. This year it's 27 seconds," Adam Meyers, head of counter adversary operations at CrowdStrike, told CyberScoop. Defenders are falling behind because attackers are refining their techniques, using social engineering to access high-privilege systems faster and move through victims' cloud infrastructure undetected.

Read more of this story at Slashdot.

Hilton Honors American Express Cards: New Limited-Time Offers

MyMoneyBlog.com - Tue, 02/24/2026 - 14:14

Updated with new limited-time offers. Hilton Hotels and American Express have co-branded credit cards with special perks for Hilton customers. Each person can typically only get one welcome offer, per card in your entire lifetime, so it’s best to apply during a temporary bump-up and/or limited-time offer. Hat tip to DoC and DDG, which has found some personal links without the once-per-lifetime language (“NLL” or “no-lifetime-language”). The business links below still include the NLL. Here’s what the “lifetime-language” looks like, and there should be a pop-up indicating that you are indeed not eligible for the bonus based on their records.

You may not be eligible to receive a welcome offer if you have or have had this Card or previous versions of this Card. You also may not be eligible to receive a welcome offer based on various factors, such as your history with credit card balance transfers, your history as an American Express Card Member, the number of credit cards that you have opened and closed and other factors. If you are not eligible for a welcome offer, we will notify you prior to processing your application so you have the option to withdraw your application.

Hilton Honors American Express Card (No Annual Fee)

  • Limited Time Offer: Earn 70,000 Bonus Points and one Free Night Reward after you spend $2,000 in purchases on the Card within your first 6 months of Card Membership. Offer Ends 4/15/26.
  • 7X Hilton Honors Bonus Points for each dollar of eligible purchases charged on your Card directly with hotels and resorts within the Hilton portfolio.
  • 5X Hilton Honors Bonus Points per dollar on purchases at US restaurants, US supermarkets, and US gas stations.
  • 3X Hilton Honors Bonus Points for all other eligible purchases.
  • Hilton Honors(TM) Silver Status comes with this card. Spend $20,000 on eligible purchases on this card within a calendar year and upgrade this benefit to Hilton Honors(TM) Gold Status through the end of the next calendar year.
  • No foreign transaction fees.
  • No annual fee.

Hilton Honors American Express Surpass Card ($150 Annual Fee)

  • Limited Time Offer: Earn 130,000 Bonus Points and one Free Night Reward after you spend $3,000 in purchases on the Card within your first 6 months of Card Membership. Offer Ends 4/15/26.
  • 12X Hilton Honors Bonus Points for each dollar of eligible purchases charged on your Card directly with hotels and resorts within the Hilton portfolio.
  • 6X Hilton Honors Bonus Points per dollar on purchases at US restaurants, US supermarkets, and US gas stations.
  • 4X Hilton Honors Bonus Points for each dollar on U.S Online Retail Purchases.
  • 3X Hilton Honors Bonus Points for all other eligible purchases.
  • Hilton Honors(TM) Gold Status comes with this card. Spend $40,000 on eligible purchases on this card within a calendar year and upgrade this benefit to Hilton Honors(TM) Diamond Status through the end of the next calendar year.
  • Up to $200 in Hilton Credits annually. Get up to $50 in statement credits each quarter for purchases made directly with a property in the Hilton portfolio on your Hilton Honors American Express Surpass® Card. That’s up to $200 in statement credits annually.
  • No foreign transaction fees.
  • Earn an additional Free Night Reward from Hilton Honors after you spend $15,000 on eligible purchases on your Card in a calendar year.
  • $150 annual fee.

Hilton Honors American Express Aspire Card ($550 Annual Fee)

  • Limited Time Offer: Earn 175,000 Bonus Points after you spend $6,000 in purchases on the Card within your first 6 months of Card Membership. Offer ends 4/15/26.
  • 14X Hilton Honors Bonus Points for each dollar of eligible purchases charged on your Card directly with hotels and resorts within the Hilton portfolio.
  • 7X Bonus Points for eligible purchases: on flights booked directly with airlines or amextravel.com; on car rentals booked directly from select car rental companies; & at U.S. restaurants.
  • 3X Hilton Honors Bonus Points for all other eligible purchases.
  • Hilton Honors(TM) Diamond Status comes with this card.
  • $400 Hilton Resort Credit. Get up to $200 in statement credits semi-annually for eligible purchases made directly with participating Hilton Resorts on your Hilton Honors Aspire Card. That’s up to $400 back annually.
  • $200 Flight Credit. Get up to $50 in statement credits each quarter, for a total of up to $200 back each year, on flight purchases made directly with an airline or through amextravel.com using your Hilton Honors American Express Aspire Card.
  • $209 CLEAR+ Credit. CLEAR+ helps get you to your gate faster by using your face to verify you are you at 55+ airports nationwide. Receive up to $209 per calendar year in statement credits, when you pay for a CLEAR+ Membership (subject to auto-renewal) with the Hilton Honors American Express Aspire Card.
  • No foreign transaction fees.
  • Multiple Free Night Reward Opportunities. Enjoy an Annual Free Night Reward from Hilton Honors in your first year of Card Membership and every year upon Card renewal. Earn another Free Night Reward from Hilton after you spend $30,000 in purchases on your Card in a calendar year. Plus, you can earn an additional Free Night Reward from Hilton after you spend a total of $60,000 in purchases on the Card within the same calendar year.
  • $550 annual fee.

Hilton Honors American Express Business Card ($195 Annual Fee)

  • Limited Time Offer: Earn 175,000 Bonus Points and one Free Night Reward after you spend $8,000 in purchases on the Card within your first 6 months of Card Membership. Offer Ends 4/15/26.
  • 12X Hilton Honors Bonus Points on eligible purchases made directly with hotels and resorts within the Hilton portfolio.
  • 5X Hilton Honors Bonus Points on other purchases made using the Hilton Honors Business Card on the first $100,000 in purchases each calendar year, 3X Points thereafter.
  • Up to $240 in Hilton credits annually (Up to $60 per quarter). Get up to $60 in statement credits each quarter for purchases made with this card directly with a Hilton portfolio property.
  • Complimentary Hilton Honors(TM) Gold Status (free breakfast, room upgrades based on availability, 5th standard reward night free).
  • Upgrade this benefit to Hilton Honors(TM) Diamond Status through the end of the calendar year if the total eligible purchases that you spend on your Card Account during a calendar year reach $40,000 or more.
  • $195 annual fee.

What are Hilton Honor points worth? The best value is from booking free hotel nights or using their “Points & Money” option where you pay with a combination of Hilton points and cash. Hilton has some really nice properties, but the value varies from hotel to hotel. I just ran a search and for the same 60,000 Hilton points, I could book rooms that cost $320 or $532 cash. I’ve seen some valuations around 0.6 cents per point, which I think is fair on average, but I would be more conservative at 0.5 cents a point. That would make 150,000 points = $750 value and 100,000 points = $500 value towards Hilton hotel stays.

The good part of Hilton points is that they have so many different hotel brands, from business-class DoubleTree to luxury Waldorf Astoria. Hilton also lets you transfer and pool points with other with other family or household members. As long as you are able to keep them active (once every 12 months), I do like to keep some around. These credit cards are handy for creating activity.

Free Night Award details. When it is offered (not all the time), the Free Night Award is valid for a one-night standard room at eligible Hilton properties, and also covers resort fees and taxes. There are many great and valuable options to redeem, but importantly read about the property exclusions here. Here are the full terms. To redeem the Free Night Reward, you must call 1-800-446-6677 (1-800-HHONORS). It’s quite easy and I’ve found the agents to be very helpful if you want to combine multiple certificates, combine a paid stay and a Free Night Award, etc. Free Night Rewards will expire 12 months from date of issuance.

I’ve used this Free Night Award at the Grand Wailea in Maui, and that standard room would have cost 110,000 Hilton Points otherwise. Other fancy possibilities include Conrad New York, Conrad London, Waldorf Astoria Park City, and Waldorf Astoria Beverly Hills.

Bottom line. Hilton American Express cards offer regular Hilton customers a good opportunity to earn additional points towards free Hilton hotel stays as well as additional perks like status upgrades. The best time to apply for a Hilton co-branded American Express card is during a limited-time increase to their welcome offers. This is because American Express has changed their standard policy to only allow each person to get a welcome offer once per card.

Also see: Top 10 Best Credit Card Bonus Offers and Top 10 Best Business Card Offers.

Categories: Finance

Build dynamic agentic workflows in OpalBuild dynamic agentic workflows in OpalPrincipal Software Engineer

GoogleBlog - Tue, 02/24/2026 - 14:00
We’re launching a new agent step in Opal, available for all users today.We’re launching a new agent step in Opal, available for all users today.
Categories: Technology

Hegseth Gives Anthropic Until Friday To Back Down on AI Safeguards

Slashdot.org - Tue, 02/24/2026 - 14:00
Defense Secretary Pete Hegseth gave Anthropic CEO Dario Amodei until Friday evening to give the military unfettered access to its AI model or face harsh penalties, Axios has learned. Hegseth told Amodei in a tense meeting on Tuesday that the Pentagon will either cut ties and declare Anthropic a "supply chain risk," or invoke the Defense Production Act to force the company to tailor its model to the military's needs. The Pentagon wants to punish Anthropic as the feud over AI safeguards grows increasingly nasty, but officials are also worried about the consequences of losing access to its industry-leading model, Claude. "The only reason we're still talking to these people is we need them and we need them now. The problem for these guys is they are that good," a Defense official told Axios ahead of the meeting. Anthropic has said it is willing to adapt its usage policies for the Pentagon, but not to allow its model to be used for the mass surveillance of Americans or the development of weapons that fire without human involvement.

Read more of this story at Slashdot.

The US Spent $30 Billion on Classroom Laptops and Got the First Generation Less Capable Than Its Parents

Slashdot.org - Tue, 02/24/2026 - 13:01
More than two decades after Maine became the first state to hand laptops to middle schoolers -- distributing 17,000 Apple machines across 243 schools in 2002 -- neuroscientist Jared Cooney Horvath told a U.S. Senate committee earlier this year that Gen Z is the first generation in modern history to score lower on standardized tests than the one before it. The U.S. spent more than $30 billion in 2024 alone putting laptops and tablets in classrooms, and Horvath cited PISA data from 15-year-olds worldwide showing a stark correlation between time on school computers and worse scores. A 2014 study of 3,000 university students found they were off-task on their machines nearly two-thirds of the time. Fortune reported back in 2017 that Maine's own test scores hadn't budged in the 15 years since the program launched, and then-governor Paul LePage called it a "massive failure." Horvath framed the generation's eroding capabilities not as a personal failure but a policy one, calling them victims of a failed pedagogical experiment.

Read more of this story at Slashdot.

Comment