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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!
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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
{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
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.
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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
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.
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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
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.
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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
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.
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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
The United States formally withdrew from the World Health Organization on Thursday, making good on an executive order that President Trump issued on his first day in office pledging to leave the international organization that coordinates global responses to public health threats. The New York Times: While the United States is walking away from the organization, a senior official with the Department of Health and Human Services told reporters on Thursday that the Trump administration was considering some type of narrow, limited engagement with W.H.O. global networks that track infectious diseases, including influenza.
As a W.H.O. member, the United States long sent scientists from the Centers for Disease Control and Prevention to participate in international decision-making about which strains to include in the flu vaccine. A W.H.O. meeting on next year's vaccine is scheduled for February. The official said the Trump administration would soon disclose how or whether it will participate.
On Thursday, the administration said that all U.S. government funding to the organization had been terminated, and that all assigned federal employees and contractors had been recalled from its Geneva headquarters and its offices worldwide.
Read more of this story at Slashdot.
An anonymous reader quotes a report from NPR: TikTok has finalized a deal to create a new American entity, avoiding the looming threat of a ban in the United States that has been in discussion for years. The social video platform company signed agreements with major investors including Oracle, Silver Lake and MGX to form the new TikTok U.S. joint venture. The new version will operate under "defined safeguards that protect national security through comprehensive data protections, algorithm security, content moderation and software assurances for U.S. users," the company said in a statement Thursday. American TikTok users can continue using the same app. [...] Adam Presser, who previously worked as TikTok's head of operations and trust and safety, will lead the new venture as its CEO. He will work alongside a seven-member, majority-American board of directors that includes TikTok's CEO Shou Chew.
[...] In addition to an emphasis on data protection, with U.S. user data being stored locally in a system run by Oracle, the joint venture will also focus on TikTok's algorithm. The content recommendation formula, which feeds users specific videos tailored to their preferences and interests, will be retrained, tested and updated on U.S. user data, the company said in its announcement. The algorithm has been a central issue in the security debate over TikTok. China previously maintained the algorithm must remain under Chinese control by law. But the U.S. regulation passed with bipartisan support said any divestment of TikTok must mean the platform cuts ties -- specifically the algorithm -- with ByteDance. Under the terms of this deal, ByteDance would license the algorithm to the U.S. entity for retraining.
The law prohibits "any cooperation with respect to the operation of a content recommendation algorithm" between ByteDance and a new potential American ownership group, so it is unclear how ByteDance's continued involvement in this arrangement will play out. Oracle, Silver Lake and the Emirati investment firm MGX are the three managing investors, who each hold a 15% share. Other investors include the investment firm of Michael Dell, the billionaire founder of Dell Technologies. ByteDance retains 19.9% of the joint venture.
Read more of this story at Slashdot.
alternative_right shares a report from ScienceAlert: A systematic review of 85 studies has now found good reason to differentiate between 'active' sitting, like playing cards or reading, and 'passive' sitting, like watching TV. [...] "Total sitting time has been shown to be related to brain health; however, sitting is often treated as a single entity, without considering the specific type of activity," explains public health researcher Paul Gardiner from the University of Queensland in Australia. "Most people spend many hours sitting each day, so the type of sitting really matters ... These findings show that small everyday choices -- like reading instead of watching television -- may help keep your brain healthier as you age."
Across numerous studies, Gardiner and colleagues found that active sitting activities, like reading, playing card games, and using a computer, showed "overwhelmingly positive associations with cognitive health, enhancing cognitive functions such as executive function, situational memory, and working memory." Meanwhile, passive sitting was most consistently associated with negative cognitive outcomes, including increased risk of dementia. The study was published in the Journal of Alzheimer's Disease.
Read more of this story at Slashdot.
The late Jack Bogle was often credited with the saying: “Don’t look for the needle in the haystack. Just buy the haystack.” If you look at the entire “haystack” of the overall market as hundreds and thousands of individual companies, over time there are a lot of losers and a few big winners, or “needles”.
In addition, I’d also add the saying that “The haystack is always changing.” Check out the table above of the top 10 largest US companies in different decades, updated as of 12/31/25 as collected by JP Morgan Asset Management (this is a useful resource that is updated every quarter).
Notice that all the 1985 Top 10 companies are marked as green. There are fewer and fewer left in the top 10 after each decade that passes, and there are none in 2025. Most likely, by the time 2045 or 2065 rolls around – when you might be retired! – the Top 10 will include companies that don’t even exist today.
Investing in a simple market-cap index fund will always be criticized as “dumb” or “overweight this” or “underweight that”. I think weighing by the company value is a perfectly fine system for the patient, long-term investor. In the end, things shakes themselves out. If you buy the entire investable US stock market, or even extend this to the entire investable world stock market, you can be sure that you own all the eventual winners.
I enjoy not having to worry about things in the long term. If I feel like doing some active trading, I can, but I can also go weeks without checking a single stock ticker if I’m not in the mood.
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