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Operating System Articles
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Windows Anonymous Pipe
Windows anonymous pipes are unidirectional communication channels that enable data transfer between parent and child processes. They behave similarly to UNIX pipes but use Windows-specific APIs. Reading and writing operations are performed using standard ReadFile() and WriteFile() functions. Syntax BOOL CreatePipe( PHANDLE hReadPipe, // Read handle PHANDLE hWritePipe, // Write handle LPSECURITY_ATTRIBUTES sa, // Security attributes DWORD nSize ...
Read MoreSetting Up Nginx with MariaDB and PHP/PHP-FPM on Fedora 24 Server and Workstation
Hosting websites and online applications requires setting up a web server infrastructure. In this article, we'll understand how to set up Nginx on Fedora 24 Server and Workstation using MariaDB and PHP/PHP-FPM. This combination creates a powerful LEMP stack for managing databases and serving dynamic content. Note: Fedora 24 is an older version that no longer receives security updates. For production environments, consider using a current Fedora version or other long-term support distributions. Installation Prerequisites Before starting, ensure your system is updated and you have root privileges. We'll install the LEMP stack components step by ...
Read MoreInstall LAMP - Apache, PHP, MariaDB and PhpMyAdmin in OpenSUSE
The LAMP stack, which stands for Linux, Apache, MySQL/MariaDB, and PHP, is a powerful combination of open−source software widely used for web development and hosting. In this tutorial, we will guide you through the process of installing and configuring the LAMP stack on openSUSE, a popular Linux distribution. Step 1: Update System Packages Before we begin, it is essential to update the system packages to ensure that we have the latest software versions and security patches ? sudo zypper refresh sudo zypper update Step 2: Install Apache Apache is a widely used web ...
Read MoreDifference between grep and fgrep command
Both grep and fgrep are Linux commands used to search for strings in files, directories, or command output. The key difference is that grep supports regular expressions, while fgrep treats the search pattern as a fixed (literal) string. grep (Global Regular Expression Print) grep searches for strings or regular expressions in files. It interprets special characters like ., *, ^, $, [ ] as regex metacharacters. It uses the Boyer-Moore algorithm for fast searching. fgrep (Fixed grep / grep -F) fgrep (equivalent to grep -F) searches for fixed strings only. It does not recognize regular expressions ...
Read MoreDifference between Fedora and CentOS
Fedora and CentOS are both Linux-based, open-source operating systems from the Red Hat ecosystem. Fedora focuses on delivering the latest technologies for developers, while CentOS provides a stable, free alternative to RHEL for production server environments. Fedora Fedora is an open-source Linux distribution intended for developers and system administrators. It is developed by the Fedora Project community and sponsored by Red Hat. Introduced in September 2003 (initially known as Fedora Core), it delivers cutting-edge software with new releases approximately every six months. CentOS CentOS (Community Enterprise Operating System) is a free, open-source Linux distribution built from ...
Read MoreDifference between Fedora and Debian
Fedora and Debian are both popular Linux-based, open-source operating systems. Fedora is backed by Red Hat and targets developers with cutting-edge software, while Debian is community-driven and known for its stability and massive package repository. Fedora Fedora is a Linux-based operating system primarily intended for developers and system administrators. It is supported by the Red Hat community and was introduced in September 2003 (initially known as Fedora Core). Fedora focuses on delivering the latest software and technologies with frequent release cycles (approximately every 6 months). It uses the dnf package manager with .rpm packages. Debian Debian ...
Read MoreDifference between Paging and Segmentation
Paging and Segmentation are two memory management techniques used by operating systems to efficiently allocate memory to processes. Paging divides memory into fixed-size blocks, while segmentation divides it into variable-size logical units. Paging Paging is a memory management technique in which a process address space is broken into fixed-size blocks called pages (typically a power of 2, between 512 bytes and 8192 bytes). Main memory is similarly divided into fixed-size blocks called frames, with frame size equal to page size. This ensures optimum utilization of main memory and avoids external fragmentation. Segmentation Segmentation is a memory ...
Read MoreFinding and modifying Service File for SAP system in root directory
You can find the SAP system service file in %SystemRoot%\system32\drivers\etc where %SystemRoot% is generally your C:\ drive. This file is commonly known as the hosts file or services file, which contains network service definitions and host mappings for SAP system connections. Modifying the Service File To modify this file, you can right-click and open this file in Edit mode using Notepad. To perform this operation, you must have Administrator rights in the system, as this file is protected by Windows security settings. ...
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