json

All posts tagged json by Linux Bash
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    The blog post details using the `lsblk --json` command in Linux to programmatically manage block devices. It explains `lsblk`'s importance in viewing device relationships and its JSON output option for easy scripting. The article provides simple `lsblk` usage examples, an executable script using `jq` to extract device names and sizes, and discusses the command's integration into automation scripts for efficient storage management in system administration and DevOps.
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    The blog outlines how to extract JSON values using `grep -oP` in Bash when tools like `jq` are unavailable. It explains that combining the `-o` and `-P` flags enables intricate pattern matching with Perl-compatible regular expressions to effectively pull specific values from JSON. The article provides practical examples but notes limitations such as handling complex JSON structures and potential formatting issues.
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    Explore the art of processing JSON and XML data using Bash in this comprehensive guide aimed at full stack developers and system administrators. This blog post delves into using jq and xmlstarlet for effective data manipulation, covering practical scenarios like system configuration and API interfacing, and integrating these skills into AI and ML workflows for enhanced data-driven application management.
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    Learn how to parse and generate JSON with Perl, an essential skill for Linux web developers working with data exchange between servers and web applications. This guide covers setting up Perl, using CPAN libraries for JSON tasks, converting JSON into Perl data structures, creating and enhancing JSON outputs, and handling Unicode seamlessly. Gain insights to bolster applications using Perl’s strong capabilities in text manipulation and integration.
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    This article explores the use of `jq`, a powerful command-line tool for JSON parsing and processing in Linux Bash. It covers how to install `jq` on various Linux distributions, basic usage examples, and advanced techniques for handling JSON data from APIs, configuration files, and more. The guide aims to aid developers, system administrators, or tech enthusiasts in effectively using `jq` to parse, filter, map, and transform JSON structures, enhancing data manipulation capabilities.
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    Explore HTTPie, a user-friendly command-line HTTP client that outshines `curl` and `wget` by offering a more intuitive syntax for web development and API testing. This guide details installing HTTPie across various Linux distributions and introduces basic commands for making HTTP requests, handling JSON, uploads, authentication, and more. Ideal for both novices and seasoned developers, HTTPie streamlines HTTP communications to enhance productivity.
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    Discover the capabilities of `jq`, a robust JSON processor for Linux, to slice, filter, and transform JSON data. This blog post explains how to install `jq` across different Linux distributions and demonstrates its practical use through various examples, making it a vital tool for developers and IT professionals handling JSON.
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    Discover how to manage JSON and XML in Bash with 'jq' for JSON and 'xmlstarlet' for XML. The guide includes installation steps and practical examples for parsing, querying, and transforming data, enhancing scripting for system administrators and developers. This tutorial is essential for efficient data handling across various programming environments.
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    Explore JSON and XML handling in Bash with tools like `jq` for JSON and `xmlstarlet` for XML. This guide covers installation across various Linux distributions and provides examples of parsing, modifying, and querying data. Ideal for developers and system administrators, it enhances Bash scripting capabilities with detailed examples and additional resources.
Master the management of GPG keys for trusted repositories in Linux environments with this detailed blog post. Learn the best practices for adding, verifying, and maintaining GPG keys using package managers like `apt`, `dnf`, and `zypper`. Gain insight into the key handling methods for Debian, Ubuntu, Fedora, CentOS, and SUSE systems to enhance the security and reliability of your software installations.
This article covers FAT32 and NTFS file system support in Linux, essential for users managing dual-boot systems or accessing Windows-formatted drives. It discusses the native compatibility and usage of FAT32, and the implementation of NTFS through NTFS-3G for reliable read and write functionality. It also provides practical guides on handling these file systems in Linux to maintain workflow efficiency across different operating environments.
Learn to master rsync over SSH for secure and efficient data transfer and synchronization in Linux systems. This detailed guide offers insights into rsync's installation, key features like delta encoding, and secure usage practices. It serves as a foundation for system administrators and IT professionals to enhance their file management skills, complete with practical examples and tips for optimizing rsync operations in various Linux environments.
Explore the comprehensive guide on Cargo, Rust's package manager. Learn how to install and configure Cargo across different Linux distributions using `apt`, `dnf`, and `zypper`. Understand key features like dependency management, project structure standardization, and extensibility with plugins. The guide also covers Cargo installation steps, including using Rustup, ensuring easy management of Rust projects.
This article explains how to utilize `i2c-tools` for managing I2C devices on Linux systems. It begins with an introduction to the importance of `i2c-tools` for debugging I2C buses and devices, followed by installation guidelines across various Linux distributions. The piece details procedures for detecting I2C buses and devices, and demonstrates reading and writing to I2C devices using `i2cget` and `i2cset`. An example script is provided, illustrating how to read temperature from a sensor and configure a register, underscoring the tools' ease and efficiency for embedded system management.
Learn how to manually install DEB packages on Debian-based Linux distributions using dpkg. This guide covers basic installation steps, fixing missing dependencies with APT, and converting DEB packages for other distributions using tools like 'alien'. Ideal for users needing specific software versions or managing cross-distribution compatibility. Further resources explore dpkg, APT vs APT-GET, and more.
This article provides an in-depth look at crucial Linux mount options like `ro`, `rw`, `noexec`, `nosuid`, and more, explaining their impact on system security and performance. It covers basic settings such as read-only and read-write, and explores security-focused options that prevent binary execution, block privileges, and restrict device file creation. Additionally, it discusses performance-enhancing options and mounting preferences, emphasizing their practical applications and significance for maintaining a secure, stable, and efficient system.
This article provides an in-depth explanation of Linux mount points, the directories where storage devices are accessible within the filesystem. Covering how to use mount commands, view mounted devices, and differentiate between temporary and permanent mounts through the `fstab` file, it's a vital resource for anyone looking to manage storage in Linux efficiently, highlighting organizational, security, and flexibility benefits.
This guide explores `sshfs` for mounting remote filesystems over SSH in Linux. It covers the installation of `sshfs`, setting up a local mount point, and securely mounting and accessing remote files. Additional insights include properly unmounting filesystems, making mounts persistent, and optimizing performance using SSH keys and other `sshfs` options, with resources for further exploration. Ideal for efficient and secure remote file management.
This guide provides an in-depth exploration of bind mounts in Linux, detailing their implementation at the kernel level, usage in scenarios like data migration and Docker containerization, and how to ensure their persistence using `/etc/fstab`. It also highlights essential security considerations to prevent unauthorized data access.
Learn how to configure HTTP/3 with Apache, leveraging the new QUIC protocol for improved web performance. This guide covers the installation of Apache and the experimental mod_http3, adjustments for QUIC protocol support, and firewall settings for UDP traffic on port 443. Despite being challenging due to limited native support, adopting HTTP/3 can significantly better your site's reliability and speed.
Learn how to configure RAID arrays in Linux, exploring various RAID levels from RAID 0 for performance to RAID 10 for speed and redundancy. This guide provides detailed, step-by-step instructions using mdadm for effective RAID setup and management, enhancing data redundancy and boosting system performance while offering tips on maintenance and monitoring. Ideal for both beginners and experienced Linux users.
This article delves into the practice of package pinning in APT, a key tool in Debian and Ubuntu for prioritizing certain package versions during updates, ensuring system stability. Detailed steps for setting pin preferences in `/etc/apt/preferences` are provided, alongside comparisons with other package managers like DNF for Fedora and Zypper for openSUSE, highlighting their unique approaches to package prioritization.
This comprehensive guide details effective methods for logging outputs from scripts in programming environments such as Bash, Python, and PowerShell. Learn the significance of logging for debugging, creating audit trails, and improving performance insights. The article highlights best practices like maintaining consistent log formats and securing log data, and explores external tools like Splunk and ELK Stack for advanced logging capabilities. Ideal for developers aiming to enhance scripting with robust logging practices.