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Articles by Satish Kumar
Page 7 of 94
General DaemonServer Design - Best Practices (CC++, Linux)
Daemon servers are background processes that run continuously on Linux systems, providing essential services like networking, file management, and system monitoring. Unlike regular programs, daemons operate independently of user sessions and terminals, making them crucial for system stability and functionality. This article explores the fundamental design principles and best practices for creating robust daemon servers using C/C++ on Linux systems. These practices ensure your daemon is efficient, secure, and maintainable. Essential Daemon Design Principles Process Daemonization A proper daemon must detach itself from the controlling terminal and parent process. The standard daemonization process involves forking, creating ...
Read MoreHow to fix \"helm has no deployed releases\" Error?
When managing applications in a Kubernetes environment, Helm serves as a powerful package manager that simplifies deployment processes. However, encountering the "helm has no deployed releases" error can disrupt your workflow and prevent proper application management. Understanding Helm and the Error Helm organizes Kubernetes deployments using charts — packages containing all necessary information to deploy applications. Instead of manually creating YAML files, Helm provides structured deployment management with features like rollbacks, history management, and template rendering. The "helm has no deployed releases" error indicates that Helm cannot find any deployed releases in your current context. This typically ...
Read MoreReplacing and then opening stdinstdout over ssh
When working with SSH (Secure Shell) connections, understanding how to manipulate stdin and stdout streams can significantly improve remote access efficiency and security. SSH provides several command-line options that allow you to control these standard streams for different use cases, from automated scripting to interactive sessions. Understanding stdin and stdout In Unix-based systems, stdin (standard input) is the file descriptor that represents the input stream, typically receiving data from the keyboard. stdout (standard output) is the file descriptor that represents the output stream, typically displaying data to the terminal. When establishing SSH connections, these streams can be redirected ...
Read MoreHow to Fix MySQL \'Command Not Found\' (Linux, Windows, mac OS)?
MySQL is a popular open-source relational database management system widely used in web applications for efficient data storage and retrieval. While it's straightforward to install on Linux, Windows, and macOS, users sometimes encounter the "Command Not Found" error when trying to execute MySQL commands. Understanding the "Command Not Found" Error The "Command Not Found" error occurs when the system cannot locate MySQL executable files. This typically happens due to: Incorrect installation − MySQL wasn't installed properly or completely PATH issues − MySQL's bin directory isn't included in the system's PATH variable Wrong installation location − MySQL ...
Read MoreHow to identify hostname and host ID for license generation
License generation is an essential aspect of software development that ensures only authorized users have access to specific software, preventing piracy and unauthorized use. One critical element of license generation is the identification of hostname and host ID. This article discusses how to identify hostname and host ID across different operating systems for license generation purposes. Understanding Hostname and Host ID A hostname is a unique label that identifies a device on a network. It helps distinguish one device from another and can be found in the computer's network settings. The hostname is typically a human-readable name assigned ...
Read MoreWhy does -r option (relocatable) make ld not find any libraries
In the world of programming and computer science, there are different techniques and tools used to solve various problems. One common problem that programmers encounter is linking errors. When a program is compiled and linked, it has to find the necessary libraries to function properly. However, there are times when the linker fails to find required libraries, resulting in a linking error. In this article, we will discuss why the -r option (relocatable) makes ld not find any libraries and provide practical examples. What is the -r Option? The -r option is a command-line option used with the ...
Read MoreHow to Fix \"NTFS Partition Failed to Mount\" Error in Linux?
The NTFS Partition Failed to Mount error is a common issue that occurs when Linux systems cannot access NTFS-formatted Windows partitions. This error prevents users from reading or writing files on Windows drives, which can be particularly frustrating in dual-boot environments where accessing Windows files from Linux is essential. NTFS (New Technology File System) is Microsoft's proprietary file system used by Windows since Windows NT 3.1. While Linux natively uses ext4, it can access NTFS partitions through the ntfs-3g driver, which provides read/write support for NTFS volumes. Common Causes The NTFS mount failure can occur due to ...
Read MoreSendto operation not permitted netsnmp
In the world of network management, Simple Network Management Protocol (SNMP) is one of the most widely used protocols. It allows network administrators to monitor and manage network devices remotely. However, while working with SNMP, you might encounter an error message called "sendto operation not permitted netsnmp". This error is quite common and can be caused by several factors. In this article, we will explore the causes of this error, its impact, and how to fix it. What is "sendto operation not permitted netsnmp" Error? When you are working with SNMP, you may receive an error message that ...
Read MoreHow to Install Akaunting Accounting Software on Ubuntu 20.04?
Akaunting is a free, open-source accounting software that can be used to manage your finances, create invoices, track expenses, and generate financial reports. It is a great alternative to expensive commercial accounting software and is suitable for small to medium-sized businesses. In this article, we will guide you through the steps to install Akaunting on Ubuntu 20.04. Prerequisites Before starting the installation, ensure you have: Ubuntu 20.04 server with root or sudo access At least 1GB RAM and 10GB free disk space A domain name (optional but recommended for production) Step 1: Update Your ...
Read MoreInstalling and Configuring Net-SNMP for Linux
Net-SNMP is an open-source software suite that implements Simple Network Management Protocol (SNMP) for managing network devices. It provides a wide range of tools that enable network administrators to monitor and manage their systems more effectively. In this article, we will explore how to install and configure Net-SNMP on a Linux system. Prerequisites Before we begin, ensure that you have access to a Linux system with root privileges. Additionally, make sure that system has an active internet connection to download necessary software packages. Installing Net-SNMP To install Net-SNMP on a Linux system, you can use package ...
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