There's really only one critical step:
Originally Posted by Jackalyn
That's it. It says to open and install (dpkg - "depackage") the driver.
dpkg -i --force-all (cupswrapper-drivername)
You have to navigate to the directory where the .deb sits first. By default, that's /home/[your user name]/Downloads unless you changed the download directory in Firefox. Note this is case-sensitive.
When you start the terminal you will be in /home/[your user name] and the prompt will tell you what user name you are. Mine says:
My user name is mark and my machine name is Sauron.
Navigate to the Downloads directory using the "cd" (change directory) command:
So for example I use:
cd /home/[your user name]/Downloads
In the interest of completeness, you can use a shortcut for /home/[your user name], the "tilde", "~". So:
The prompt will now tell you where you are. For example:
You then follow the Brother instructions using superuser privileges. There are two ways to do this - "sudo" before a command carries out the command with superuser privileges once. You have to type "sudo" every time. "sudo su" changes you to a superuser for the duration of the terminal session. You only have to enter it once and all commands are carried out with superuser privileges.
After the first "sudo" the system will ask for your password - this is the one you set when you installed Ubuntu. For convenience it only does this once, then it won't ask you again for a period of time (10 minutes?)
So you type either:
sudo dpkg -i --force-all (cupswrapper-drivername)
Note the prompt changed after "sudo su" and shows me logged in as "root" (i.e. the superuser). To find the exact driver name, list the directory contents with "ls". You need to get the driver name exact and the Brother drivers are long with many version numbers. The terminal will tell you if you get it wrong.
root@Sauron:/home/mark/Downloads# dpkg -i --force-all (cupswrapper-drivername)
The other Brother commands just check to see that the driver installed correctly and go through some modifications in CUPS.
Oh, another shortcut - press the up and down arrows to cycle through the commands you previously entered. This is helpful when you get the exact driver name wrong and you get an error, just type "ls" to show the directory contents and get the driver name, then press the up arrow twice to cycle to the command where you used the driver name. Correct the driver name and press Enter.