Book Image

Ubuntu 20.04 Essentials

By : Neil Smyth
Book Image

Ubuntu 20.04 Essentials

By: Neil Smyth

Overview of this book

Ubuntu is undeniably one of the most highly regarded and widely used Debian-based Linux distributions available today. Thanks to its ease of use and reliability, Ubuntu has a loyal following of Linux users and an active community of developers. Ubuntu 20.04 Essentials is designed to take you through the installation, use, and administration of the Ubuntu 20.04 distribution in detail. For beginners, the book covers topics such as operating system installation, the basics of the GNOME desktop environment, configuring email and web servers, and installing packages and system updates. Additional installation topics such as dual booting with Microsoft Windows are also covered along with crucial security topics such as configuring a firewall and user and group administration. For the experienced user, the book delves into topics such as remote desktop access, the Cockpit web interface, logical volume management (LVM), disk partitioning, and swap management. Further, it also explores KVM virtualization, Secure Shell (SSH), Linux containers, and file sharing using both Samba and NFS to provide a thorough overview of this enterprise-class operating system.
Table of Contents (38 chapters)
38
Index

21.2 Remotely Displaying an Ubuntu Application

The first step in remotely displaying an application is to move to the system where the application is to be displayed. At this system, establish an SSH connection to the remote system so that you have a command prompt. This can be achieved using the ssh command. When using the ssh command we need to use the -X flag to tell it that we plan to tunnel X11 traffic through the connection:

$ ssh -X user@hostname

In the above example user is the user name to use to log into the remote system and hostname is the hostname or IP address of the remote system. Enter your password at the login prompt and, once logged in, run the following command to see the DISPLAY setting:

$ echo $DISPLAY

The command should output something similar to the following:

localhost:10.0

To display an application simply run it from the command prompt. For example:

$ gedit

When executed, the above command should run the gedit tool on the remote...