Basic Working Linux CLI Commands.

• clear - Clear the Screen

• hostname - To get the Host Name

• sudo -i - To Elevate the access to root user.

• apt update - To update the default system and security packages

Install a package

• Installing GIT - Open Source Version Control System

  • sudo -i

  • apt install git -y

  • git --version

Guide to install a package

• Package :

  • Can be executed as a Service - e.g., Tomcat/Nginx/Jenkins

  • Can be Executed as a Tool - e.g., Maven

• We can run Start/Stop/Restart/Enable/Disable/Status in a service.

Let’s take example of Nginx

• Enter the command apt install nginx -y to install Nginx.

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  Enter the command nginx -version to check if Nginx is installed and to see its version.

• systemctl - Is a command line utility to manage the services running on Linux Machine

  • systemctl status nginx

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  • systemctl stop nginx

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  • systemctl start nginx

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  • systemctl enable nginx - To make Nginx as a Startup Task

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  • systemctl disable nginx - TO Remove from startup task list

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• Update the Package :

  • apt update nginx -y

  • apt upgrade nginx -y

• which nginx - To get the installation path.

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• Manual Installation :

  • Download the Package :

    • wget # used to download the package

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    • Extract using tar command in the specific directory.

• Un-Installation of any Package :

  • apt remove nginx -y

    • apt remove nginx -y

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