Setting Up Repo
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2. Adding Repo
Then to Add Ubuntu Cosmic Repository
To Specify the Differents Ubuntu Repos:- Main – Canonical-supported free and open-source software.
- Universe – Community-maintained free and open-source software.
- Multiverse – Software restricted by copyright or legal issues.
- Restricted – Proprietary drivers for devices.
Simply Copy and Execute this Command for the essential Main Repo:
(And in case of “su: Authentication failure” try instead with “sudo su“)su -c "echo 'deb http://us.archive.ubuntu.com/ubuntu/ disco main' >> /etc/apt/sources.list.d/sid.list"
Again to Add also the Universe Repo:
(And in case of “su: Authentication failure” try instead with “sudo su“)
su -c "echo 'deb http://us.archive.ubuntu.com/ubuntu/ disco universe' >> /etc/apt/sources.list.d/sid.list"
Again to Add also the Multiverse:
(And in case of “su: Authentication failure” try instead with “sudo su“)su -c "echo 'deb http://us.archive.ubuntu.com/ubuntu/ disco multiverse' >> /etc/apt/sources.list.d/sid.list"
Finally, to Summ also the Restricted Stuff:
(And in case of “su: Authentication failure” try instead with “sudo su“)su -c "echo 'deb http://us.archive.ubuntu.com/ubuntu/ disco restricted' >> /etc/apt/sources.list.d/sid.list"
Ctrl+x to Save & Exit from nano Editor :)
When in Doubt Start by just Adding the Main and Universe and then Searching for the Needed Squeezes. -
3. Setting Up Default
Then to Set the Default Release
And this is Indispensable to Preserve the Stability of the System in Case of Updates/Upgrades!
Make or Edit the Apt Config File:sudo nano /etc/apt/apt.conf
And Depending of your Release Append
For a Bionic Based OS:APT::Default-Release "bionic";
Rather for Xenial one:
APT::Default-Release "xenial";
Possibly if needed to Find out What’s your actual Repo Base
Use the cat Command like:cat /etc/apt/sources.list
Or again look into the sources Directory to find out eventual others Repos:
cat /etc/apt/sources.list.d/*.list
Thanks to dracae
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4. Enabling Repo
Finally, to Re-Load Repositories
Do:sudo apt update
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5. Installing Single Package
Finally, to Install One Package from Cosmic Repo
Execute:sudo apt -t disco install [MYCOOLPACKAGE]
So for instance:
sudo apt -t disco install rclone-browser
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