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...

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...

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...

Delete Lines Matching a Specific Pattern in a File using SED

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In this guide, we are going to learn how to delete lines matching a specific pattern in a file using SED. SED is a stream editor that performs basic text filtering and transformations on an input stream (a file or input from a pipeline). Delete Lines Matching a Specific Pattern in a File using SED In our previous guide, we covered...

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...

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...

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

Connect to WiFi in Linux Using NMCLI command

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This tutorial will guide you on how to connect to WiFi in Linux using NMCLI command. NMCLI is a command-line tool for controlling NetworkManager and reporting network status. It can be utilized as a replacement for nm-applet or other graphical clients. It is used to create, display, edit, delete, activate, and deactivate network connections, as well as...

Restrict SFTP User Access to Specific Directories in Linux

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In this guide, we are going to learn how to restrict SFTP user access to specific directories in Linux systems. SFTP, an acronym for Secure File Transfer Protocol is a secure file transfer protocol that runs over SSH. It offers all the features offered by the legacy FTP protocol but in a more secure manner.