An enlightened printer manufacturer my have a Linus/Unix printer driver available for the printer (Apple's OS is build on top of Unix!) so look on the manufacturers web site. [HP provides open source drivers for most of their printers as part of the HPLIP project. ]
However in general the Open Source model does not approve of proprietary printer drivers and the Linux way is to provide generic printing capability using what is called the Common Unix Printing System (CUPS - see the related link below). This means that even though you can not find a specific printer driver for your printer you Linux system may still detect it and use it - try using the printing tools.
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CUPS includes drivers for Dymo, Epson, HP, Intellibar, Okidata, and Zebra printers.
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Photo-quality printer drivers are available for Canon, Epson, HP, and others from the Gutenprint open source project.
No.
you get a faster print and it comes out double sided
Yes. The Dell AIO 922 is completely supported by CUPS (Common Unix Printing System) in Linux.
The drivers are typically included with the distribution. If your hardware doesn't work out of the box, there is a good chance it doesn't have any Linux drivers at all.
Yes. BackTrack is a Linux distribution that focuses on penetration testing and computer forensics.
Linux is not "based" on anything per se. Its kernel is all original code and the software included in the average Linux distribution is non-centric to a given system. However. Linux is inspired by and readily identified as being "related" to UNIX, to the point many Linux users consider it to be UNIX.
Yes.
No, Ubuntu is part of Linux.
Ubuntu is a Linux distribution (as in a specific OS setup with the Linux kernel.)
Yes. It is supported by the foo2xqx driver.
Yes.
Scientific Linux is a Linux distribution. It is a free and open source operating system and aims to be as close to the commercial enterprise distribution as possible.