はてなブックマーク

Aaron KiliLast Updated: December 26, 2023 Read Time: 5 minsCategories Linux Commands 12 Comments Udev (userspace /dev) is a Linux sub-system for dynamic device detection and management, since kernel version 2.6. It’s a replacement of devfs and hotplug. It dynamically creates or removes device nodes (an interface to a device driver that appears in a file system as if it were an ordinary file, store

Aaron KiliLast Updated: January 5, 2024 Read Time: 10 minsCategories Top Tools 14 Comments There is a wealth of information on the web that you probably want to keep up to date with; from news to how-tos, guides, tutorials, and more. Imagine having to visit, on a daily basis, all your favorite blogs or websites – it’s a bit of a challenge, especially if you have a tight schedule. This is where RSS

Aaron KiliLast Updated: November 9, 2023 Read Time: 4 minsCategories Linux Commands 5 Comments In this article, we will share a few command-line programs that you can use in a Linux terminal. By the end of this article, you will learn about some free, open-source, and exciting, text-based tools to help you do more with boredom on the command line. You can use your default package manager to instal

Aaron KiliLast Updated: January 3, 2019 Read Time: 2 minsCategories SSH 2 Comments tmate is a clone of tmux (terminal multiplexer) that provides a secure, instant and easy-to-use terminal sharing solution over an SSH connection. It is built on top of tmux; you can run both terminal emulators on the same system. You can either use the official servers at tmate.io or host your own tmate server. The

20 Best Linux Bandwidth Monitoring Tools for Network Analysis Are you having problems monitoring your Linux network bandwidth usage? Do you need help? It’s important that you are able to visualize what is happening in your network in order to understand and resolve whatever is causing network slowness or simply to keep an eye on your network. In this article, we will review 19 useful bandwidth mon

Gabriel CánepaLast Updated: July 14, 2023 Read Time: 4 minsCategories Linux Commands 3 Comments Back in the mid-1990’s when the Internet was still in its infancy, a Swedish programmer named Daniel Stenberg started a project that eventually grew into what we know as curl today. Initially, he aimed at developing a bot that would download currency exchange rates from a web page periodically and would

Aaron KiliLast Updated: October 24, 2023 Read Time: 4 minsCategories Monitoring Tools, Security 14 Comments There are constant levels of high attacks and port scans on Linux servers all the time, while a properly configured firewall and regular security system updates add an extra layer to keep the system safe, but you should also frequently watch if anyone gets in. This will also help to ensure t

Aaron KiliLast Updated: July 4, 2018 Read Time: 1 minCategories Docker, Monitoring Tools Leave a comment ctop is a free open source, simple and cross-platform top-like command-line tool for monitoring container metrics in real-time. It allows you to get an overview of metrics concerning CPU, memory, network, I/O for multiple containers and also supports inspection of a specific container. Docker C

Aaron KiliLast Updated: February 18, 2021 Read Time: 3 minsCategories Monitoring Tools 5 Comments To maximize the end-to-end performance of services, applications and databases on a server, system administrators usually carry out custom performance tunning, using various tools, both generic operating system tools as well as third-party tools. One of the most useful performance tuning tools on Cent

There are thousands of tools, utilities, and programs that come pre-installed on a Linux system. You can run them from a terminal window or virtual console as commands via a shell such as Bash. A command is typically the pathname (eg. /usr/bin/top) or basename (e.g. top) of a program including arguments passed to it. However, there is a common misconception among Linux users that a command is an a

Github is a powerful, secure, and the most popular online platform for hosting software projects for version control using Git. It is particularly well known as a development platform for open-source projects, however, Github supports private repositories as well. Since Microsoft acquired GitHub, many open source enthusiasts are probably weary of this acquisition, knowing very well that Microsoft

Aaron KiliLast Updated: February 28, 2018 Read Time: 2 minsCategories Monitoring Tools 18 Comments In our earlier article, we have reviewed the usage of TOP Command and it’s parameters. In this article we have came up with another excellent program called Interface TOP (IFTOP) is a real time console-based network bandwidth monitoring tool. It will show a quick overview of network activities on an

Aaron KiliLast Updated: December 18, 2017 Read Time: 1 minCategories MariaDB, MySQL Leave a comment In this article, I will show you how to check the size of MySQL/MariaDB databases and tables via the MySQL shell. You will learn how to determine the real size of a database file on the disk as well as size of data that it present in a database. Read Also: 20 MySQL (Mysqladmin) Commands for Database

Aaron KiliLast Updated: May 11, 2021 Read Time: 3 minsCategories Open Source 5 Comments testssl.sh is a free and open-source, feature-rich command-line tool used for checking TLS/SSL encryption enabled services for supported ciphers, protocols, and some cryptographic flaws, on Linux/BSD servers. It can be run on macOS X and Windows using MSYS2 or Cygwin. Features of Testssl.sh Easy to install and

Aaron KiliLast Updated: September 28, 2017 Read Time: 2 minsCategories Linux Auditing Leave a comment This article is our ongoing series on Linux Auditing, in our last three articles we have explained how to audit Linux systems (CentOS and RHEL), query auditd logs using ausearch and generate reports using aureport utility. In this article, we will explain how to audit a given process using autrace

Aaron KiliLast Updated: April 25, 2023 Read Time: 14 minsCategories Editors, Linux IDE, Top Tools 92 Comments C is an excellent, powerful, and general-purpose programming language that offers modern and generic programming features for developing large-scale applications ranging from video games, search engines, and other computer software to operating systems. C language is usually considered the

Aaron KiliLast Updated: April 19, 2017 Read Time: 4 minsCategories Editors 10 Comments While working with Linux systems, there are several areas where you’ll need to use a text editor including programming/scripting, editing configuration/text files, to mention but a few. There are several remarkable text editors you’ll find out there for Linux-based operating systems. Suggested Read: 12 Best Text

rtop – An Interactive Tool to Monitor Remote Linux Server Over SSH rtop is a straightforward and interactive, remote system monitoring tool based on SSH that collects and shows important system performance values such as CPU, disk, memory, network metrics. It is written in Go Language and does not require any extra programs to be installed on the server that you want to monitor except SSH server a

James KiarieLast Updated: September 27, 2023 Read Time: 12 minsCategories Apache 71 Comments Apache web server is one of the most popular and widely used web servers for hosting files and websites. It’s easy to install and configure to meet your hosting needs. However, the default settings are not secure to offer the much-needed protection that your site needs. In this guide, we look at some of th

Progress – Show Percentage of Copied Data for (cp, mv, dd, tar) Commands Progress, formerly known as Coreutils Viewer, is a light C command that searches for coreutils basic commands such as cp, mv, tar, dd, gzip/gunzip, cat, grep, etc currently being executed on the system and shows the percentage of data copied, it only runs on Linux and Mac OS X operating systems. Additionally, it also displays

Ravi SaiveLast Updated: April 1, 2024 Read Time: 5 minsCategories Ubuntu 383 Comments This tutorial will guide you on how you can perform the installation of Ubuntu 22.04 in dual-boot with a Microsoft operating system on machines that come pre-installed with Windows operating system. If your computer has no other operating system already installed and you plan to use a Windows variant alongside Ub

10 Most Dangerous Commands – You Should Never Execute on Linux The command-line interface is a powerful and handy utility for administering a Linux system. It provides a fast and versatile way of running the system, especially when managing headless systems which do not have a graphical interface. While useful in managing your system, the command line is fraught with risks. Running bad commands ca

How to Filter Text or String Using Awk and Regular Expressions – Part 1 When we run certain commands in Linux to read or edit text from a string or file, we often try to filter the output to a specific section of interest. This is where using regular expressions comes in handy. What are Regular Expressions? A regular expression can be defined as strings that represent several sequences of characte

28 Things to Do After Fresh Installation of Fedora 26 Workstation If you are a Fedora fan, I’m sure that you know that Fedora 26 has been released and we are closely following it ever since, Fedora 26 came with many new changes that you can view in their official release announcement page. In this guide, we will show you some useful tips on what to do after installing Fedora 26 Workstation to make

AvishekLast Updated: July 13, 2015 Read Time: 4 minsCategories PHP 4 Comments In my last post “How to Use and Execute PHP Codes in Linux Command – line”, I emphasized on running PHP codes directly in Linux Command-line as well as executing PHP script file in Linux Terminal. Run PHP Codes in Linux Commandline – Part 2 This post aims at making you aware of a few awesome features of PHP usage in Linu

15 Must-Know FFmpeg Commands for Video, Audio & Image Conversion FFmpeg is a handy multimedia framework that helps you work with different kinds of media files like videos, audio, and images. It allows you to do things like converting one type of video file to another, changing audio formats, or even modifying pictures. Think of it as a tool that lets you easily manage and transform your multimedi

How to Remove “Unity” and Install Cinnamon and Mate Desktop in Ubuntu Unity is the default desktop interface for Ubuntu, many people like it and many don’t, for those who don’t like it, we’ll explain to you how to completely remove or replace Unity from Ubuntu and install Cinnamon and MATE interfaces easily. Step 1: Removing Unity You can keep Unity interface installed on your system, if you want

Ravi SaiveLast Updated: November 23, 2023 Read Time: 10 minsCategories Linux Commands 119 Comments We are all aware of the most popular commands called ‘useradd‘ or ‘adduser‘ in Linux. There are times when a Linux System Administrator is asked to create user accounts on Linux with specific properties, limitations, or comments. In Linux, the ‘useradd‘ command is a low-level utility used for adding