Showing headlines posted by linuxhint

I am going to show you how to install SSH client and server tools on CentOS 8 server and how to configure SSH server on CentOS 8. In order to connect to a SSH server, you must have OpenSSH client programs installed on your client machine. So Let's get started

xargs is an external command used to convert standard input to command line arguments that is said to stand for “extended arguments.” It was mainly created for use with commands not built to handle piped input or standard input such as rm, cp, echo 1 and other external commands only accepting arguments as parameters.

In this article, I am going to show you how to install and configure the vsftpd FTP server on Ubuntu. vsftpd is an open source FTP server. It is very secure and extremely fast. vsftpd is also stable. It is easy to configure as well.

dnsmasq is a very lightweight local DNS server. dnsmasq can also be configured as a DNS cache server and DHCP server. dnsmasq has IPv4 and IPv6 supports including DHCPv4 and DHCPv6. dnsmasq is ideal for small network. In this article, I am going to show you how to use dnsmasq to configure a local DNS server, caching DNS server and DHCP server.

nethogs is a networking monitoring tool for Linux. Just like top or htop, nethogs can monitor network traffic in real time. nethogs can monitor any specific network interface or all the networking interfaces on your computer. nethogs shows bandwidth usage per process on your computer in real time. In this article, I am going to show you how to install and use nethogs to monitor network traffic on Linux.

PyTorch is a Python based scientific package which provides a replacement of NumPy ndarrays as Tensors which takes utmost advantage of the GPUs. Another positive point about PyTorch framework is the speed and flexibility it provides during computing. PyTorch is an efficient alternative of working with Tensors. PyTorch is mainly embraced by the Data Science community due to its capability to conveniently define neural networks. Let’s see this computational package in action in this lesson.

DNS ( Domain Name System ) is the backbone of the internet and without dns, almost all the services will not work. If you are a system admin you should face the situation to troubleshoot dns issues in your daily work. There are different tools available nowadays and here I am discussing some of the common tools.

In this article, you’ll be learning about a very crucial part of the whole Docker setup, the Dockerfile. The Dockerfile uses a simple structure. While this simplicity is a good thing, it gives room for individuals to just hack commands together, without fully understanding the impact. At the end of this article, you’ll have a better understanding of the Dockerfile. So, you’ll be able to write Dockerfiles that you understand.

SciPy is open source, it has a very active and vibrant community of developers due to which there are enormous number of modules present for a vast amount of scientific applications and calculations available with SciPy. In this lesson, we will see what is the use of SciPy library in Python and how it helps us to work with mathematical equations and algorithms in an interactive manner.

Load average is a measurement of the amount of work versus free CPU cycles available on a system processor. In this article I’ll define the term, demonstrate how Linux calculates this value, then provide insight into how to interpret system load.

In this lesson on Python Matplotlib library, we will look at various aspects of this data visualisation library which we can use with Python to generate beautiful and intuitive graphs which can visualise data in a form which business wants from a platform.

Btrfs or B-tree file system is the newest competitor against OpenZFS, arguably the most resilient file system out there. Both the file systems share some commonalities such as having checksum on data blocks, transaction groups and copy-on-write mechanism, making them both target the user groups. So what’s the difference and which one should you use?

Zabbix is very popular, easy to use, fast monitoring tool. It support monitoring Linux, Unix, windows environments with agents, SNMP v1,v2c,c3, agentless remote monitoring. It can also monitor remote environment with a proxy without opening port for remote environments. How to install and setup Zabbix on Debian is shown in this article.

ASCII graphics have been admired by most players especially those who prefer large pixels and old-school gaming. Even with the visually impressive games such as the Rise of the Tomb Raider or Forza Horizon 3, there are some classic ASCII games still out there which are more popular. This article is for all those who either already love ASCII games or would like to try these out for a change.

How to crop an image in Inkscape? The best way to crop is to create an object and shrink the picture to the object. The technique will be shown in this guide.

JSON data can be read easily from JSON file by using a bash script with the jq tool, see more details and examples in this tutorial

ethtool is a networking utility on Linux. It is used to configure Ethernet devices on Linux. ethtool can also be used to find a lot of information about connected Ethernet devices on your Linux computer. In this article, I will show you how to use ethtool command on Linux. I will be using Debian 9 Stretch for the demonstration.

In whatever imaginative way you decide to use Kafka, one thing is certain — You won’t be using it as a single instance. It is not meant to be used that way, and even if your distributed app needs only one instance (broker) for now, it will eventually grow and you need to make sure that Kafka can keep up. Docker-compose is the perfect partner for this kind of scalability.

Nornir is a Python library for automating network connected devices. You can compare it to Ansible, which is mainly used to automate configuration and management of Linux servers.

If you’re using Linux for quite a while and it is your daily task to install and test new Linux distributions, then you might have seen at times all the installed operating systems are not listed in the GRUB menu. It may be due to GRUB not being installed correctly, or GRUB not able scan the hard drives correctly. If it ever happened to you, do not freak out! It is really very easy to solve.