Use Netcat to Establish and Test TCP and UDP Connections: A Practical Guide
Learn how to use Netcat to test TCP and UDP connections for troubleshooting and network diagnostics. Includes key commands, examples, and common use cases.
SSHを使用してリモートサーバーに接続する方法
SSHは、リモートLinuxサーバーの管理に使用される重要なツールです。このガイドでは、このユーティリティの基本的な使用方法とSSH環境の設定方法ついて説明します。
How To Use the Linux Fuser Command
The fuser command is a very smart unix utility used to find which process is using a file, a directory or a socket. It also gives information about the user owning the process and the type of access, as well as displays the process id(PID) of every process using the specified files or file systems.
Understanding Systemd Units and Unit Files
Increasingly, Linux distributions are adopting or planning to adopt the systemd init system. This powerful suite of software can manage many aspects of your server, from services to mounted devices and system states. In systemd, a unit refers to any resource that the…
How To Add, Delete, and Grant Sudo Privileges to Users on a Debian VPS
Adding and deleting users are basic tasks that you will have to preform on most servers. Granting sudo privileges to allow users to perform administrative functions is another common requirement. In this article, we will discuss how to create and delete users and assign administrative privileges on a Debian server.
How To Configure Custom Connection Options for your SSH Client
OpenSSH, the most common SSH client on most systems, allows you to provide customized connection options. These can be saved to a configuration file that contains different options per server. This can help keep the different connection options you use for each host separated and organized, and avoids having to provide extensive options on the command line whenever you need to connect.
How To Install and Configure a Basic LDAP Server on an Ubuntu 12.04 VPS
LDAP is a centralized system for describing relationships and entries through a file and directory structure. This guide will cover how to set up a basic LDAP server and administer it through a web front end.
How To Install and Use Ack, a Grep Replacement for Developers, on Ubuntu 14.04
Searching for files and searching through files are two activities that you probably do often when developing an application. Ack is a search tool that is optimized for working on source files. It can intelligently handle searches very fast and is a suitable replacement for grep in most situations. In this guide, we’ll show you how to install and use ack on an Ubuntu 14.04 server.
How To Limit Resources Using cgroups on CentOS 6
Control groups, or cgroups, is a kernel feature introduced in CentOS 6 to provide a new way of limiting access to system resources for processes.
How To Set Up a Samba Share For A Small Organization on Ubuntu 16.04
Samba is an open-source implementation of the SMB/CIFS networking protocol that is used in Windows environments for shared services such as file and printer access and Active Directory. In this guide, you will install and configure a standalone Samba server to provide networked file stores or shares for a hypothetical small organization called Example.com and learn how to access the shares from Windows, Linux, and macOS.
