Article Categories
- All Categories
-
Data Structure
-
Networking
-
RDBMS
-
Operating System
-
Java
-
MS Excel
-
iOS
-
HTML
-
CSS
-
Android
-
Python
-
C Programming
-
C++
-
C#
-
MongoDB
-
MySQL
-
Javascript
-
PHP
-
Economics & Finance
Open Source Articles
Page 13 of 123
Secure Files/Directories using ACLs (Access Control Lists) in Linux
Access Control Lists (ACLs) in Linux provide a flexible and granular way to secure files and directories beyond traditional Unix permissions. While standard permissions only allow setting access for owner, group, and others, ACLs enable administrators to assign specific permissions to individual users and groups simultaneously. This allows fine-grained control over access rights using commands like setfacl and getfacl to define read, write, and execute permissions for multiple entities. How ACLs Work ACLs extend the basic Unix permission model by maintaining additional permission entries for files and directories. Each ACL entry specifies a user or group and their ...
Read MoreSecuring SSH, Setting Hostname and Enabling Network Services
Securing SSH involves changing the default SSH port, implementing strong authentication methods, and disabling root login. Setting a hostname helps with system identification and network organization. Enabling network services such as firewalls and intrusion detection systems provides comprehensive security coverage. These practices significantly enhance SSH server security and reduce vulnerability to unauthorized access attempts. SSH Security Configuration SSH security begins with modifying the default configuration. The primary steps include changing the default port from 22 to a non-standard port, implementing key-based authentication, and restricting user access. Step 1: Install OpenSSH Server sudo apt-get update sudo ...
Read MoreSend a curl DELETE Request {With Example}
The curl DELETE request is an HTTP method that allows the removal of a specified resource from a server. It is commonly used to delete data or content from web services or APIs. The DELETE request requires the URL of the resource to be removed, and additional headers or parameters can be included if needed. When the server receives the DELETE request, it processes the request and removes the desired resource if it exists. A successful DELETE request typically returns an HTTP status code indicating the successful removal of the resource. DELETE Request Method The DELETE request method ...
Read MoreServer Automation Guide
Server automation is a comprehensive approach for streamlining and optimizing server administration through automated tools and techniques. This guide focuses on the strategic use of automation tools to eliminate repetitive tasks, improve efficiency, and reduce human errors in server operations. By automating various aspects such as configuration management, software updates, provisioning, and monitoring, organizations can improve scalability, ensure consistent server environments, and achieve faster response times. How Server Automation Works Server automation operates through two fundamental approaches: imperative and declarative. In the imperative approach, a sequence of commands is executed step-by-step to instruct the system on how ...
Read MoreServer Operating Systems: Server OS Types & How to Choose
A server operating system is a specialized software designed to manage and control server resources, facilitating smooth operations by handling tasks such as data storage, user access, security, and network management. Unlike desktop operating systems, server OS platforms are optimized for high performance, scalability, and multi-user environments. They ensure efficient communication between client devices and servers, enabling seamless sharing of information and services across networks. Types of Server Platforms Different server types require specific operating system features and configurations − Web servers − Host websites and web applications, responding to HTTP requests from browsers. Common examples ...
Read MoreHow to List the Last Five Modified Files in Linux?
In Linux, it is often necessary to find out the most recently modified files for various reasons, such as troubleshooting or auditing purposes. Listing the last five modified files is a common requirement that can be achieved using various Linux commands. This article explores multiple methods to accomplish this task efficiently. Note − Linux commands are case-sensitive. Using ls Command The ls command is one of the most commonly used commands in Linux to list files and directories. We can use the ls command to list the files in a directory sorted by modification time using the ...
Read MoreHow to Monitor Disk IO in a Linux System
Disk monitoring is a critical task for maintaining optimal performance in Linux systems. The disk I/O subsystem is often the slowest component and can become a bottleneck that affects overall system performance. When processes wait for I/O operations to complete, it directly impacts system responsiveness. Effective disk monitoring helps identify which processes are causing I/O bottlenecks and determines the root cause of performance issues. In this article, we'll explore essential tools like iostat and iotop to monitor disk I/O performance in Linux systems. Installing iotop The iotop tool is available in most Linux distribution repositories and can ...
Read MoreServerMania - Discover High Availability Cloud Computing, powered by OpenStack
ServerMania is a leading cloud computing provider that leverages OpenStack, an open-source cloud platform, to deliver highly available, redundant, and cost-effective private and public cloud solutions. The company specializes in providing dedicated servers and cloud hosting services with exceptional uptime, modern infrastructure, and superior customer support. ServerMania harnesses the full power of OpenStack technology to enable rapid cloud server deployment and offers streamlined, customized server management solutions. Their IT infrastructure supports instant provisioning of cloud servers, virtual private servers, dedicated servers, and web hosting solutions that can be deployed in as little as 5 minutes. The company operates modern ...
Read MoreUse sudo Command in Non-Interactive Mode
In Linux, the sudo (Super User DO) command is frequently used as a prefix to a command that only superusers are permitted to execute. Any command that has the "sudo" prefix will run with elevated privileges, or in other words, allow a user with the necessary permissions to execute a command in the role of another user, such as the superuser. This is comparable to Windows' "run as administrator" option. Note − Linux commands are case-sensitive. Default sudo Behavior To use the sudo command on the majority of contemporary Linux distributions, a user must be a member ...
Read MoreWorking and components of Linux GUI with Examples
The Graphical User Interface (GUI) is a visual interface that allows users to interact with a Linux system through windows, icons, menus, and pointing devices rather than text-based commands. Unlike command-line interfaces, GUI provides an intuitive way to operate the system using graphical elements that represent files, applications, and system functions. How Linux GUI Works Linux GUI operates through a layered architecture where the X Window System (X11) serves as the foundation layer, managing graphics rendering and input/output operations. Above this sits the window manager, which controls window placement, decoration, and behavior. The desktop environment provides the complete ...
Read More