Articles by Himanshu Arora
About Himanshu Arora
Himanshu Arora has been working on Linux since 2007. He carries professional experience in system level programming, networking protocols, and command line. In addition to HowtoForge, Himanshu's work has also been featured in some of world's other leading publications including Computerworld, IBM DeveloperWorks, and Linux Journal.
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Linux Groups Command for Beginners (with Examples)
Author: Himanshu Arora •
Tags: linux, shell •
Comments: 0 In Linux, there's a concept of users (those who use the system), and then there's the concept of groups, which is basically a logical mechanism to manage a collection of users. To give you a basic idea, groups make it easy to manage users with, say, same security and access privileges.
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Linux passwd Command Tutorial for Beginners (8 Examples)
Author: Himanshu Arora •
Tags: linux, shell •
Comments: 0 As a Linux command line user, you should be aware of utilities that help you with user-account management. Once such tool is passwd, which lets you change your account password. In this tutorial, we will discuss the basics of this command using some easy to understand examples.
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Linux sleep Command Tutorial for Beginners (with Examples)
Author: Himanshu Arora •
Tags: linux, shell •
Comments: 0 Sometimes, while working on the Linux command line, you might want to run a couple of commands one after the other, but with a certain amount of delay between them. It's here, in situations like these, the sleep command may prove to be really helpful.
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Linux strings Command Tutorial for Beginners (5 Examples)
Author: Himanshu Arora •
Tags: linux, shell •
Comments: 3 Looking inside a binary/executable file to grab human-readable strings isn't the kind of work that everybody does, but what if you are asked to do this? Opening the file in an editor, and manually looking for stuff isn't an elegant solution. So, what to do? Yes, you guessed it right - there exists a command line utility that does this for you.
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Linux sum Command Tutorial for Beginners (with Examples)
Author: Himanshu Arora •
Tags: linux, shell •
Comments: 0 As you start spending more and more time working on the Linux command line, you tend to learn utilities that aren't very frequently used. Once such tool is sum, which only offers two features: display checksum and block count for input files. In this short tutorial, we will quickly discuss the basics of sum using some easy to understand examples.
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Linux tac Command Tutorial for Beginners (with Examples)
Author: Himanshu Arora •
Tags: linux, shell •
Comments: 2 We've already discussed the Linux cat command in one of our earlier tutorials. As you may be aware, the cat command is mainly used for displaying file contents in output. However, what you may not be aware of is that there exists a command that does exactly opposite of what cat does. The tool in question is tac, and in this tutorial, we will discuss its basics using some easy to understand examples.
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Linux tail Command Tutorial for Beginners (5 Examples)
Author: Himanshu Arora •
Tags: linux, shell •
Comments: 1 Sometimes you want to monitor what new information is being written to a file (think of log files), or for whatever reasons, want to access the last few lines of a file. Well, there's a command line utility that lets you do this in Linux, and it's call tail.
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Linux uname Command Tutorial for Beginners (8 Examples)
Author: Himanshu Arora •
Tags: linux, shell •
Comments: 0 Regardless of whether you are a system admin, software developer, or a normal Linux user, you may find yourself in a situation where you need some system information like kernel release or version. Well, there exists a built-in command line utility - dubbed uname - that lets you do this.
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How to Monitor Nginx using Netdata on CentOS 7
Author: Himanshu Arora •
Tags: centos, linux, monitoring, nginx •
Comments: 2 Netdata is an open source monitoring system for Linux servers. It provides real-time performance and health monitoring with beautiful dashboard and analytics. In this tutorial, I will show you how to monitor Nginx using Netdata on CentOS 7.
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Linux 'users' Command Tutorial for Beginners (with Examples)
Author: Himanshu Arora •
Tags: linux, server •
Comments: 1 Sometimes, while working on the Linux command line, you might want to quickly check which all users are currently logged in to the system. Well, there's a built-in Linux command line utility that lets you do this easily. The tool in question is 'users', and in this tutorial, we will discuss the basics of it using some easy to understand examples.
