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Operating Systems News
Ubuntu
2w
362
Faizul "Piju" 9M2PJU: How to Set Up Chrony as a Local NTP Server Using Docker
- Setting up a local NTP server is crucial for devices synchronization; using Chrony in Docker is efficient and lightweight.
- Chrony, a modern alternative to ntpd, offers better accuracy, lightweight setup, and is suitable for both clients and servers.
- Steps involve creating a Dockerfile for Chrony, configuring chrony.conf for both local and global server syncing, building and running the Docker container.
- Additional steps include testing the NTP server, running as a local time authority, and setting up firewall rules for UDP port 123.
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21 Likes
Medium
2w
414
Image Credit: Medium
LicheeRV Nano — Board programming (Part 2)
- The LicheeRV Nano board programming in C/C++ utilizes a cross-compiler available for x86 Linux or a specialized Jupyter notebook for browser-based development.
- Compilation issues in examples using ioctl can be resolved by editing ioctl.h or through automatic patching in the Google Colab notebook.
- Configuration of pins for GPIO, UART, I2C, PWM, and SPI functions on the LicheeRV Nano board involves pin management via multiplexer selection and specific addresses.
- Settings for pin configurations can be done during board boot using U-Boot or via devmem utility from a running Linux OS for testing purposes.
- Controlling GPIO pins through the Linux GPIO sysfs interface allows for terminal interaction or programmatically from C code, as demonstrated in project examples.
- Similarly, interaction with PWM pins occurs through the sysfs interface, with functionalities like generating square waves and programmatically controlling PWM pins from code.
- Interrupt processing without full-fledged setup is exemplified using Linux API in handling GPIO interruptions effectively.
- Utilizing UART, I2C, and SPI interfaces on the board involves configuring the multiplexer to set up communication channels and interacting with respective devices through C/C++ code snippets.
- Examples provided cover UART data sending, SPI hardware interaction, and I2C devices like AHT20 and BMP280 for temperature and barometer readings.
- Experiments on I2C will be carried out with the WiFi module turned off, and future articles will involve working with a CSI camera connected to the board.
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24 Likes
TechViral
2w
17
Image Credit: TechViral
5 Ways to Install Audio/Sound Driver in Windows 11
- Windows 11 automatically installs the latest version of device drivers during updates, but can fail, causing issues with audio drivers.
- Methods to install audio/sound drivers in Windows 11 include using Windows Update, Device Manager, manual installation from the official website, running the Audio Troubleshooter, and using Driver Updater programs.
- To force Windows Update for sound drivers, go to Settings > Windows Update > Check for updates. Device Manager can be used to update drivers manually by uninstalling and restarting.
- Manually install sound drivers by visiting the PC's manufacturer website, downloading the latest driver, and running the executable file. Running the Audio Troubleshooter and using driver updater programs are other effective methods.
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1 Like
Javarevisited
2w
183
Image Credit: Javarevisited
10 Linux Commands and Options Every Developer should Learn
- This article highlights lesser-known options of essential Linux commands like find, grep, and mkdir that many users, including programmers, might not be familiar with.
- One such example is 'cp -p,' which preserves timestamps, allowing users to view when a file was originally created.
- The post shares 10 Linux command examples that aim to enhance users' knowledge and productivity. Readers are encouraged to share similar discoveries in the comments section.
- The article is part of a series that covers Java, Unix, Tibco RV, and FIX Protocol tutorials.
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11 Likes
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Dev
2w
401
Image Credit: Dev
Python for Oracle on ARM Linux | Part 2 - "shell like" SQL scripts
- Python can be a powerful alternative to shell scripting for Oracle DBAs, providing better readability and cross-platform compatibility.
- By using Python's subprocess module, DBAs can automate tasks like running SQL commands, managing script execution, and spooling outputs.
- Key benefits include integration with Python capabilities like data parsing, reporting, and automation frameworks.
- The essential Python module needed for these tasks is subprocess, which allows running programs such as sqlplus.
- Setting up variables like connection string, SQL file path, output file path, and command argument is crucial for the process.
- Subprocess is utilized with shell=True to run the SQL*Plus UNIX command and execute SQL scripts.
- An example SQL script provided in the article demonstrates data retrieval and JSON processing for weather data.
- A Python script 'py_ora.py' is created to run SQL files via SQL*Plus, redirecting outputs to a specified file for review.
- Running 'py_ora.py' in a miniconda environment successfully executes the SQL file and captures the expected outputs.
- The approach showcased emphasizes the use of Python over traditional shell scripting for Oracle DBA tasks, enhancing automation and maintainability.
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24 Likes
Ubuntu
2w
314
Kubuntu General News: Plasma 6.4 Beta1 available for testing
- Kubuntu has released the Plasma 6.4 Beta1 for testing on both the stable and upcoming development build versions.
- The Beta release comes with a disclaimer warning users about the unstable and untested nature of the software. It is not recommended for production or daily work environments to avoid crashes and data loss.
- Testers can access the 6.4 Beta1 packages and required dependencies in the Beta PPA, regardless of whether they are using the backports PPA. Adding the beta PPA, upgrading, and rebooting are the steps recommended for testing.
- Testing feedback can be provided to the Kubuntu team via launchpad.net or other communication channels. The testing aims to benefit both Kubuntu and the upstream KDE Plasma software.
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18 Likes
TechViral
2w
144
Image Credit: TechViral
9 Ways to Fix File Explorer Not Responding on Windows 11
- If File Explorer is not responding on Windows 11, you can restart it from the Task Manager to resolve the issue.
- Another solution is to restart your Windows 11 PC to give your hardware some rest and cooling down time.
- Clearing the File Explorer history can help fix corruption issues that may be causing the problem.
- Running the System File Checker (SFC) command can detect and repair corrupted system files that may be impacting File Explorer.
- If the SFC method fails, the Deployment Image Servicing and Management (DISM) tool can be used to fix system problems.
- Running the Disk Cleanup utility can free up storage space and clean junk files that might be affecting File Explorer.
- Disabling third-party antimalware software can help determine if they are causing conflicts with File Explorer.
- Updating Windows 11 by installing all pending updates can resolve any bugs or glitches affecting File Explorer.
- As a last resort, resetting your Windows 11 PC to its default factory settings can provide a fresh start and potentially fix File Explorer crashes.
- Following these steps can help address File Explorer problems on Windows 11 and improve its responsiveness.
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8 Likes
LinuxHint
2w
288
12 Best Linux Browsers in 2025
- Linux offers a variety of browsers for users to choose from, each with unique features and capabilities.
- Firefox, a popular browser for Linux, focuses on privacy features like tracking protection and frequent updates.
- Google Chrome, another leading Linux browser, offers a vast extension store and Google ecosystem integration.
- Opera, a Chromium-based browser with integrated VPN and messenger support, is favored for its speed and functionality.
- Brave prioritizes privacy with features like Tor browsing and a unique Ad reward system.
- Chromium, an open-source browser, is known for its extension support and privacy-oriented approach.
- Vivaldi, a customizable Chromium-based option, includes a built-in mail client and RSS feed reader.
- Tor, renowned for its anonymity features, routes browsing requests through multi-layered encryption.
- Text-based browsers like Lynx, Browsh, and W3m cater to users seeking lightweight and resource-friendly browsing experiences.
- Each browser type has its limitations, from resource consumption to customization options and extension support.
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17 Likes
Itsfoss
2w
104
Image Credit: Itsfoss
Automatically Format Code On File Save in Visual Studio Code
- Manually formatting code can be tedious, especially in fast-paced or collaborative development environments.
- Configure Visual Studio Code to automatically format code on file save using the Prettier extension.
- Install Prettier extension in VS Code and enable format on save to keep your code clean without extra effort.
- Optional advanced configuration with a .prettierrc file allows customization of code formatting settings in Prettier.
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6 Likes
Medium
3w
284
Image Credit: Medium
A Path Down Linux Lane
- Linux initially relied on CLI but later introduced GUIs like KDE Plasma and GNOME to enhance accessibility.
- The flexibility of Linux distros allows users to choose between CLI and GUI interfaces.
- Linux dominates in server, cloud, supercomputers, IoT, and embedded systems, showcasing its versatility and reliability.
- With its reliability, security, and strong community support, Linux is a worthwhile choice for both beginners and tech enthusiasts.
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17 Likes
Dev
3w
188
Image Credit: Dev
Using Fail2Ban to Protect Against Brute Force Attacks
- Fail2Ban is a tool that protects servers from brute force attacks by monitoring logs and banning malicious IPs.
- It is lightweight, open-source, and effective for services like SSH, Apache, and Nginx.
- Installing Fail2Ban on Linux systems like Ubuntu/Debian or CentOS/RHEL is straightforward.
- Configuring Fail2Ban involves setting parameters like bantime, findtime, and maxretry in config files.
- Testing your setup includes simulating brute force attacks and monitoring bans using fail2ban client status.
- Fail2Ban can be extended to protect other services like web servers and applications by creating custom filters.
- Monitoring Fail2Ban activity in /var/log/fail2ban.log and fine-tuning thresholds are crucial for effective security.
- Combining Fail2Ban with strong passwords and regular log monitoring enhances server security.
- In summary, Fail2Ban is a valuable tool for intrusion prevention on Linux servers, providing a robust defense mechanism.
- It is recommended to stay proactive with security measures to safeguard servers effectively.
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11 Likes
Dev
3w
166
Image Credit: Dev
Day 6 – “Where Did It Go?!” | Mastering the find, head, tail, and wc Commands in RHEL 9
- The news article focuses on mastering the find, head, tail, and wc commands in Linux to efficiently navigate and manipulate files using the command line.
- find command acts as a detective, searching for specific files or directories throughout the system.
- head command displays the initial lines of a file, tail command shows the end of a file, and wc command counts the lines, words, and characters in a file.
- By understanding and utilizing these commands, users can enhance their Linux skills and become more proficient in file management via the command line.
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9 Likes
Medium
3w
56
Zyn: Modern C++ Project Management Made Effortless
- Zyn is a modern C++ project management tool that allows adding dependencies directly from Git.
- Zyn offers commands like creating a new project, installing dependencies, adding local dependencies, running the app, updating dependencies, and cleaning build artifacts.
- The project structure generated by Zyn is organized with directories for source files, headers, Git dependencies, compiled outputs, and version locks.
- Zyn provides a configuration example, showcases dependency management for Git repos or local paths, and emphasizes best practices for clean and predictable C++ project workflows.
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3 Likes
Dev
3w
314
Image Credit: Dev
🚀 Zyn: Modern C++ Project Management Made Effortless
- Zyn is a tool designed for modern C++ workflows with Git-level dependency tracking, semantic versioning, and a clean project structure.
- Zyn offers features like Git-based dependencies with version locking, C++ standards support, and automatic compiler flag generation.
- Commands in Zyn include project creation, dependency installation, running the app, updating dependencies, and cleaning build artifacts.
- Zyn promotes best practices such as committing project configuration files, using tagged releases, and keeping dependencies fresh to ensure reproducibility.
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18 Likes
Dev
3w
315
Image Credit: Dev
Stop Opening Files Just to Count Stuff: Let wc Do It for You
- The 'wc' command in Linux provides a fast way to analyze a file without opening it by counting lines, words, and characters.
- Using different options like -l, -w, -c, and -m allows for specific counts such as lines, words, characters, and multi-byte characters.
- Practical examples of where 'wc' saves time include showing all stats, counting lines for logs, word count for documentation, and comparing multiple files.
- Advanced usage includes piping output into 'wc', monitoring log growth, and integrating it into debugging, validation, reporting, and performance tasks.
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