Freedup finds and eliminates duplicate files by linking them, and thus reduces the amount of used disk space within one or more file systems. By default, hardlinks are used on a single device, symbolic links when the devices differ. A set of options allows you to modify the methods of file comparison, the hash functions, the linking behavior, and the reporting style. You may use batch or interactive mode. Freedup usually only considers identical files, but when comparing audio or graphics files, you may elect to ignore the tags.
OpenADK is a construction kit for embedded Linux. It creates Linux systems that are optimized for size and short bootup times. The toolchain supports many architectures (arm, m68k, mips, microblaze, ppc, sparc, superh, x86, and x86_64). It can build customized images for Qemu. Raspberry PI, Lemote Yeelong, and Sharp Zaurus devices are supported as a proof of concept. Approximately 685 source packages are available.