Ubuntu 15.04 Vivid Installing Brother DCP-7020 Printer Drivers
You are Welcome! The Tutorial shows you Step-by-Step How to Install and Getting-Started with Brother DCP-7020 All-in-One Printer and Scanner for Ubuntu 15.04 Vivid Vervet i386/amd64 GNU+Linux.
Included inside the Article a Link to Guide about Get Started Scanning on Ubuntu 15.04 Vivid Linux.

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Open a Shell Terminal emulator window
Ctrl+Alt+t on Desktop
(Press “Enter” to Execute Commands) -
Download Brother DCP-7020 Printer Linux Driver
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Double-Click on Archive Extract into /tmp
Or from Command Line:
gunzip -c $HOME/Downloads/linux-brprinter-installer*.gz > /tmp/linux-brprinter-installer
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Give Execution Permission.
cd /tmp
sudo su
If Got “User is Not in Sudoers file” then see: How to Enable sudo
chmod +x linux-brprinter-installer*
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Installing Brother Printer DCP-7020 Drivers
./linux-brprinter-installer*
When Prompted Insert the Brother Printer Model ‘DCP-7020‘!
Then the Installer will Provide Automatically to Download and Install the Printer and potentially also the Scanner Drivers…
Again following the CLI wizard, when Prompted about a Device URI:- For a USB Connection Simply Enter “n”!
- For a Network Shared Connection Setup Go to: http://localhost:631/printers/
Select the Printer
Select “Modify Printer”
Enter Your sudo Username & Pass
Select the Protocol and Continue…
For Help see Instructions on:
http://localhost:631/help/network.html
Last to Achieve the SuperUser session:
exit
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Get Started Scanning on Ubuntu