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 cut Command Explained for Beginners (with Examples)
Author: Himanshu Arora • Tags: linux, shell • Comments: 0In Linux, if you want to print a file's content on stdout, the first command that comes to mind is cat. However, there may be times when the requirement is to remove certain part of the file and print only the rest of the content. You'll be glad to know there exists a tool - dubbed cut - that lets you do this.
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Linux chrt Command Tutorial for Beginners (5 Examples)
Author: Himanshu Arora • Tags: linux, shell • Comments: 0Processes form the core of a running Linux system. When a program converts into a process (which is when it's executed), a lot of attributes are set. Sometimes, you may want to change these attributes at runtime. There exists a command line tool chrt that lets you do this.
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Linux chpasswd Command Tutorial for Beginners (5 Examples)
Author: Himanshu Arora • Tags: linux, shell • Comments: 1Here at HowtoForge, we have already discussed the passwd command, which lets you change your account password on a Linux system. But what if you want to change passwords of multiple users in one go? Well, there exists a command - chpasswd - that lets you do this.
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Linux chfn Command Tutorial for Beginners (6 Examples)
Author: Himanshu Arora • Tags: linux, shell • Comments: 0A user in Linux has a lot of information associated with it, including home and office phone numbers, office room number, and more. We usually skip filling this information (as it's all optional) while creating a user. But did you know there exists a command that lets you tweak all this information?
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Linux bzip2 Command Tutorial for Beginners (6 Examples)
Author: Himanshu Arora • Tags: linux, shell • Comments: 0File compressions are carried out according to specific algorithms. There are many compression techniques, and one of them is achieved through bzip2. In this tutorial, we will learn the basics of bzip2 using some easy to understand examples.
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Linux look Command Tutorial for Beginners (with Examples)
Author: Himanshu Arora •
Tags: linux, shell •
Comments: 0 Although the Linux find command does a fabulous job for searching on the command line, there may be situations where a dedicated tool may be more convinient. One such case is to find lines in a file that start with a particular word. There exists a command - dubbed look - that does this for you.
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Linux ar Command Tutorial for Beginners (5 Examples)
Author: Himanshu Arora • Tags: linux, shell • Comments: 1In Linux, there are several command-line utilities that let you create archives. One such utility is ar. In this tutorial, we will discuss the basics of this command line tool using some easy to understand examples.
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How to Setup IKEv2 VPN Using Strongswan and Letsencrypt on Ubuntu
Author: Himanshu Arora •
Tags: linux, security •
Comments: 0 Strongswan is an open source multiplatform IPSec implementation. It's IPSec-based VPN solution that focuses on strong authentication method and mechanism, offers support for both IKEv1 and IKEv2 key exchange protocols, authentication based on X.509 certificates or pre shared keys, and secure IKEv2 EAP user authentication.
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Linux aspell Command Tutorial for Beginners (5 Examples)
Author: Himanshu Arora • Tags: linux, shell • Comments: 0A spell checker is an important tool if your work involves writing or editing text files or documents. While most GUI based editors come with spell checking feature inbuilt, the same cannot be said for command line editors. However, there are separate command line tools that can help you with spell check.
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Linux zcat Command Tutorial for Beginners (5 Examples)
Author: Himanshu Arora • Tags: linux, shell • Comments: 1While compression is helpful in general as it allows you to save space on your system, command line users need to uncompress the file for several small tasks, like viewing what all the file contains. However, there exists a command line utility - dubbed zcat - that lets you take a peek inside compressed files without any additional effort.
