"The tiny Linux category is filled with excellent, stripped-down specialized Linuxes for all occasions, from desktops to servers to routers to Internet kiosks, and everything else you can think of. They run on embedded devices, router boards, commercial wireless routers (like the Linksys WRT54G series), PCs, blades, USB sticks, CDs and the sleek new IDE flash solid-state drives.
"A common difficulty with these tiny Linuxes is adding or removing software and upgrading because package managers are usually jettisoned to save space. So you have to copy binaries and libraries to add new applications, and upgrading often means re-installing the root filesystem..."
