The Raspberry Pi is a great little cheap computer, but it doesn't have a lot of interfacing options to connect external peripherals. If you want a low-footprint solution that looks great sitting on the Raspberry Pi itself, DIYer Joe Walnes outlines...
Version 6.0 of NetBSD brings scalability improvements on multi-core systems, a rewritten disk quota system, a new packet filter and updates to several ports including ARM, PowerPC, Xen and MIPS.
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