Step-by-step – Install OwnCloud Client in Debian Buster 10 Gnu/Linux

Setting Up Repo

2. 3. Adding Repository

   How to Add ownCloud Client Repository in Debian GNU/Linux

   ownCloud Client Repo Debian Installation Guide

   Debian ownCloud Client Repository Setup

   First, Login as SuperUser with:

   sudo su

   Or:

   su -

   If Got “User is Not in Sudoers file” then see: How to Enable sudo