Shell

Shell scripting is writing a series of command for the shell to execute. Learn basics of shell scripting in this tutorial.

How to use htop to monitor system processes in Ubuntu 18.04

Most people are familiar with using the task manager in Windows. This is a function that is mainly used to view current processes. In the same way, Ubuntu also provides us with a utility to monitor the system process and determine how much space each process takes and what process is currently running on the… read more »

Как планировать задачи в Ubuntu 18.04 с помощью Crontab

Иногда вы не хотите, чтобы процесс выполнялся во время по умолчанию, заданное вашей операционной системой, а вы сами хотите определить время для запуска процесса. Для этого в Ubuntu мы используем демон Cron, который работает так же, как планировщик задач в Windows. Что вы можете сделать с демоном Cron, так это то, что вы можете указать… read more »

How to create a dummy zombie process in Ubuntu 18.04 LTS

As software testers, we sometimes need to know what the zombie process looks like on our system. We can run various tests if we know exactly which program and process identifier is associated with this zombie process. What is a zombie process? A zombie or non-existent process on Linux is a process that has been… read more »

How to install Yarn NPM Client on Debian and manage dependencies through it

Facebook initiated a yarn project in collaboration with Google, Exponent and Tilde. Yarn is an open source NMP client that offers more advanced package management features and benefits than the standard NMP client. Its features include fast and reliable installation, license verification, NPM compatibility, and multiple registries. Yarn also allows you to automate the installation,… read more »

Run Math on a Linux command line using the expr command

Linux a terminal (shell) makes it easy to perform mathematical calculations, including addition, subtraction, multiplication, division, increment and comparison of several numbers. This lesson will show you various examples of basic mathematical calculations using expr command, I followed all the commands and procedures in Debian 10, but the commands will work on any other Linux… read more »

How to password protect files in Vim Editor

Vim is a powerful, feature-rich, extensible text editor that is used on all Linux operating systems. It is available in the repositories of almost all major Linux distributions. Due to its performance and low memory consumption, this is the best choice for most Linux users. Another useful feature of the Vim editor is its built-in… read more »

How to install multiple versions of Java on CentOS 8

Java is one of the most widely used high-level programming languages ​​and was originally developed by Sun Microsystems. It is used to create a complete application or systems that can run on a single computer system or in a distributed server environment. In addition, Java is also used to create a small application or applet… read more »

How to shut down Ubuntu

Ubuntu was originally a terminal operating system, but over time, Linux gradually introduced a graphical interface into its operating system. Currently, GUI methods are the only way to solve many operating system problems. Well, we are here to teach you some cool methods that will help you turn off your system in Ubuntu, as a… read more »

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