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The grep command used to find a particular string or pattern in one or multiple patterns. Grep stands for “Global Regular Expression Print”. Grep is the most powerful command in Linux. It can be also used to read Standard Output from another command. In this tutorial, you are going to learn How to Search Multiple Words or String Patterns Using grep Command.

Vim is a popular text editor that comes preinstalled on macOS, Linux Distros and BSD Like operating systems. Vim is a free and opensource text editor available today. Finding or searching a word is a frequent task that we often do. In this tutorial, you are going to learn How to Find or Search a Word in Vim or Vi Text Editor.

Vim is one of the popular text editors among the software developers & system administrators. The macOS as well as on different Linux Distros Vim comes preinstalled. We can edit code in Vim easily. But the syntax is not highlighted by default in Vim. In this tutorial, you are going to learn How to Turn On Syntax Highlighting in Vim/Vi Editor.

Vim is one of the popular text editors among the software developers and system administrators. On the macOS as well as on different Linux Distros it comes preinstalled. When you work with Vim copy paste or cut pasting text is one of the common tasks we do most of the time. In this tutorial, you are going to learn how to Copy, Cut, Paste in Vim or Vi.

Do you want to learn how to copy files in the Linux terminal? Then you are the right place. In this tutorial, you are going to learn How to Copy File using cp command in Linux.

Vim or Vi is the popular text editor among the Linux System Administrators and Software Developers. Vim comes preinstalled on major Linux distributions and macOS. The Vim text editor is used to edit configuration files or program files. In this tutorial, you are going to learn how to Save a File in Vim or Vi and Quit the Editor.

In some cases, we need to change the username of the system or the user id (UID) of the system or both. In Linux there are lot configurations depends on user id like permissions. By using the command usermod you can change the username of your system. After changing the Username of UID the changes will affect systemwide. In this tutorial, you will learn how to change or rename username and UID in Linux.

The ls command in Linux is used to list files and directories information inside the filesystem. It is the most basic command in the Linux systems. The ls command can also display additional information about files.

Bash case statements can be used to replace multi-level if… else statement. You can use the case statement to match one variable against several values. The bash case statement is similar to switch statement in C programming but bash switch statement does not go ahead one it’s found.

MariaDB is the fork of MySQL and backward compatible replacement for MySQL. In Fedora 29 main repository by default contains repository for MariaDB. Here in this tutorial, we are going to show you how to install MariaDB 10 on Fedora 29.

Linux systems are designed in such a way that they can support multiple users. Because of this Linux systems should maintain the database for access permissions for different files and directories.

Bash For Loop is used to execute a series of commands repeatedly until certain condition reached. Basically, Loops in any programming languages are used to execute a series of commands or tasks again and again until the certain condition becomes false. Loops are useful in bash to perform repetitive tasks.

By using Let’s Encrypt you can get a free valid SSL certificate. Let’s Encrypt is the Certificate Authority (CA) which provides free SSL certificate. To get SSL certificate Certbot client is used which fetches and deploys SSL certificate on your server.

Basically bash function is a set of commands. Bash function mainly used for executing a single or group of commands again and again. Functions make it easier to read the code and execute meaningful group code statements.

The screen command in Linux is used creating terminal multiplexing. By using screen you can run any number of the terminal based applications. Screen command can enable you to resume your work where last time you exited the application.

Docker is an application used to manage application processes in containers. Containers run applications in resource-isolated process. By using docker you can build, test and deploy applications that can run anywhere as portable and self-sufficient containers.

Curl utility in Linux is used to transfer files to or from a server using protocols like HTTP, HTTPS, FTP, SCP, SFTP etc. This command is easy to use and can work without user interaction. Curl command can also be used to download or upload files with supported options like proxy support, resume transfer etc.

VirtualBox is a free open source virtualization software allows you to run multiple operating systems. VirtualBox is also a cross-platform software which is available for Linux, Windows, and MacOS etc. operating systems. Ubuntu global repository also supports VirtualBox installation through it, but it always does not provides the latest version of VirtualBox.

Concatenating Strings in Bash Script is one of the easiest operations. Concatenating string means appending one string to another and creating a new string. This string joining operation used more often in Bash Script.

Redis is a in memory key-value data structure store mainly used as a database, message broker or as a cache. Redis supports wide languages with flexibility and high performance. It supports different data structures like strings, lists, sets, maps, spatial indexes, and bitmaps.