Saturday, January 23, 2021

Viewing System Processes using ps and top commands

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When commands are run on a system, various processes associated with them are created. Among the roles of a system administrator, being able to determine what processes are running, monitor and manage them is a critical skill. There are several program tools that can be used to achieve this. In this tutorial, we are going to explore some of...

How to Add Users to sudo group in Linux

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In this guide, we are going to learn how to add users to sudo group in Linux. More often than not, you want, as a non-root user, to run commands with elevated privileges in Linux. So the only way this can happen is to give user sudo privileges by adding them to a sudo group or to sudoers file. How...

Installing Perf Performance Analysis Tool on CentOS 8

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In this guide, we are going to learn on installing Perf Performance Analysis Tool on CentOS 8. Perf aka perf_events aka perf tools is a powerful performance counters monitoring tool for Linux systems that gathers data about hardware events such as instructions executed, branches mispredicted or cache-misses suffered. It also provides very low overhead profiling of applications to trace dynamic...

Install Cheat Command on Ubuntu 20.04

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In this tutorial, you will learn how to install cheat command on Ubuntu 20.04. Cheat is a Python based command line utility that allows you to create and view interactive cheat sheets on the command-line. It was designed to help remind *nix system administrators of options for commands that they use frequently, but not frequently enough to remember. Install Cheat Command...

Install Foxit PDF Reader on Ubuntu 20.04

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In our today's guide, we are going to learn how to install Foxit PDF reader on Ubuntu 20.04. Foxit PDF reader is available in both Free and Enterprise editions. Some of the features provided by Foxit PDF reader include but not limited to; Intuitive User InterfaceCustomize ToolbarTouch Screen SupportPDF PortfoliosForm FillingForm Data Import/ExportParticipate in Shared ReviewComments ToolsManage CommentsInsert Images, Videos,...

Install and Setup ZSH and Oh-My-Zsh on Ubuntu 20.04

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In this tutorial, we are going to learn how to install and setup Zsh and Oh-my-Zsh on Ubuntu 20.04. Z shell (ZSH) Zsh is a UNIX command interpreter (shell) usable as an interactive login shell and as a shell script command processor. It incorporates features of other shells such as Bash, tcsk, ksh. Some of the features include; Smart command TAB auto-completionImproved...

Create User Account using useradd/adduser commands in Linux

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In this tutorial, you will learn how to create user account using useradd/adduser commands in Linux. User management is one of the most common task in Linux system administration. Creating users, setting up their environments, setting passwords, managing their groups, deleting users etc are all tasks surrounding user management in Linux. Having the ability to manage users in LInux...

How to check Hardware information, block devices and filesystems on a Linux System

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In this tutorial, we will learn how to check hardware information, block devices and filesystems on Linux system. Many a time as we interact with the Linux system in our day to day activities, there may arise a need to check on the mounted filesystems, available block devices, disk space usage, system hardware information or even file space usage. Well,...

Run only Specific Commands with sudo in Linux

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In this guide, you are going to learn how to run only specific commands with sudo in Linux. Our previous guide covered how to add user to sudo group to enable them to execute the commands with elevated privileges. How to Add Users to sudo group in Linux So it is possible to enable a user to run only specific commands with...

Delete Lines Matching Specific Pattern in a File using VIM

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This guide will take you through how to delete lines matching specific pattern in a file using VIM. Linux system admins work with files day in day out. At some point, you may want just to delete lines matching a specific pattern or a string in a file. There are quite a number of tools out there that you...