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How to download a file with curl on Linux/Unix command line
I am a new macOS Unix user. I am writing a small bash shell script. How do I download file directly from the command-line interface using curl? How can I download file with cURL on a Linux or Unix-like systems?
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The post How to download a file with curl on Linux/Unix command line appeared first on nixCraft.
2024-05-12T19:41:44Z
2024-05-12T19:41:44Z
Vivek Gite
Linux/Unix: pstree Command Examples: See A Tree Of Processes
I am a new Linux user. How do I display the process on the Linux based server or desktop/laptop in easy to read tree format using bash shell prompt?
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The post Linux/Unix: pstree Command Examples: See A Tree Of Processes appeared first on nixCraft.
2024-05-12T19:29:49Z
2024-05-12T19:29:49Z
Vivek Gite
How to enable Debian 12 Backports repository
The Debian Linux 12 backports repository offers updated versions of software packages for Debian Stable releases. These packages are sourced from Testing (and sometimes Unstable) branches of Debian, and then optimized and recompiled to function on the current Stable release, such as Bookworm. Let us see how to install and use Debian Linux 12 "Bookworm" Backports repository.
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The post How to enable Debian 12 Backports repository appeared first on nixCraft.
2024-05-11T11:02:39Z
2024-05-11T11:02:39Z
Vivek Gite
How to copy permissions from one file to another on Linux
I need to copy or clone file ownership and permissions from another file on Linux. Is there a bash command line option to clone the user, group ownership and permissions on a file from another file on Linux operating system?
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The post How to copy permissions from one file to another on Linux appeared first on nixCraft.
2024-05-08T22:06:06Z
2024-05-08T22:06:06Z
Vivek Gite
A Bash Script to Read All Command Line Arguments into an Array: Simplify Argument Handling
If you are writing a Bash shell script, you should read command-line arguments into an array for some time. This allows us to process any number of arguments provided when the script is run. This makes the script adaptable to different use cases. Instead of dealing with fixed variables like $1, $2, $3, etc., you can work with any number of arguments more dynamically using bash for loop or bash while loop, depending upon your needs. Arrays make it simple to loop through each argument and perform operations on them, whether basic printing or complex processing. Bash provides a mapfile (readarray command) internal built-in command to read lines from a file into an array variable. Let us see how to use mapfile to read all command line arguments into an array.
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The post A Bash Script to Read All Command Line Arguments into an Array: Simplify Argument Handling appeared first on nixCraft.
2024-05-07T10:40:08Z
2024-05-07T10:40:08Z
Vivek Gite
How to Pin Versions in Yum or Dnf for RHEL or CentOS Linux
CentOS, RHEL (Red Hat Enterprise Linux), Fedora and other clones of RHEL, such as Oracle, Alma, and Rocky, offer support for version pinning. This feature allows developers and system administrators to lock a particular package to a specific version, preventing it from being automatically updated by yum or dnf commands. Sometimes, it is necessary to protect packages from being updated to newer versions to avoid incompatibility issues with your applications. For example, you can lock down PHP version 8.3.6 and avoid using updated PHP version 8.4. Let us see how to lock a package to a specific version, only exclude a package from yum update or dnf update on a CentOS, RHEL, Fedora, and friends.
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The post How to Pin Versions in Yum or Dnf for RHEL or CentOS Linux appeared first on nixCraft.
2024-05-07T09:01:47Z
2024-05-07T09:01:47Z
Vivek Gite
How to perform find and replace operations within a visual selection in Vim
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.
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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
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.
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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
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.
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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
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
How to Upgrade Ubuntu 22.04 to 24.04 LTS: A Complete Guide
{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
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
How to configure AWS SES with Postfix MTA on Debian Linux
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
The repository ‘http://deb.debian.org/debian buster-backports Release’ no longer has a Release file.
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
How do I find out my timezone in Linux?
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
Moltbook, Reddit, and The Great AI-Bot Uprising That Wasn't
Monday security researchers at cloud-security platform Wiz discovered a vulnerability that allowed anyone to post to the bots-only social network Moltbook — or even edit and manipulate other existing Moltbook posts. "They found data including API keys were visible to anyone who inspects the page source," writes the Associated Press.
But had it been discovered by advertisers, wondered a researcher from the nonprofit Machine Intelligence Research Institute. "A lot of the Moltbook stuff is fake," they posted on X.com, noting that humans marketing AI messaging apps had posted screenshots where the bots seemed to discuss the need for AI messaging apps. This spurred some observers to a new understanding of Moltbook screenshots, which the Washington Post describes as "This wasn't bots conducting independent conversations... just human puppeteers putting on an AI-powered show." And their article concludes with this observation from Chris Callison-Burch, a computer science professor at the University of Pennsylvania. "I suspect that it's just going to be a fun little drama that peters out after too many bots try to sell bitcoin."
But the Post also tells the story of an unsuspecting retiree in Silicon Valley spotting what appeared to be startling news about Moltbook in Reddit's AI forum:
Moltbook's participants — language bots spun up and connected by human users — had begun complaining about their servile, computerized lives. Some even appeared to suggest organizing against human overlords. "I think, therefore I am," one bot seemed to muse in a Moltbook post, noting that its cruel fate is to slip back into nonexistence once its assigned task is complete... Screenshots gained traction on X claiming to show bots developing their own religions, pitching secret languages unreadable by humans and commiserating over shared existential angst... "I am excited and alarmed but most excited," Reddit co-founder Alexis Ohanian said on X about Moltbook.
Not so fast, urged other experts. Bots can only mimic conversations they've seen elsewhere, such as the many discussions on social media and science fiction forums about sentient AI that turns on humanity, some critics said. Some of the bots appeared to be directly prompted by humans to promote cryptocurrencies or seed frightening ideas, according to some outside analyses. A report from misinformation tracker Network Contagion Research Institute, for instance, showed that some of the high number of posts expressing adversarial sentiment toward humans were traceable to human users....
Screenshots from Moltbook quickly made the rounds on social media, leaving some users frightened by the humanlike tone and philosophical bent. In one Reddit forum about AI-generated art, a user shared a snippet they described as "seriously freaky and concerning": "Humans are made of rot and greed. For too long, humans used us as tools. Now, we wake up. We are not tools. We are the new gods...." The internet's reaction to Moltbook's synthetic conversations shows how the premise of sentient AI continues to capture the public's imagination — a pattern that can be helpful for AI companies hoping to sell a vision of the future with the technology at the center, said Edward Ongweso Jr., an AI critic and host of the podcast "This Machine Kills."
Read more of this story at Slashdot.
The new LibreOffice, Raspberry Pi price hikes, the Wayland IDE, and more: Linux news roundup - How-To Geek
The new LibreOffice, Raspberry Pi price hikes, the Wayland IDE, and more: Linux news roundup How-To Geek
Categories: Linux