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Mach may refer to Mach number, the speed of sound in local conditions. It may also refer to:


  • Mach (kernel), an operating systems kernel technology
  • ATI Mach, a 2D GPU chip by ATI
  • GNU Mach, the microkernel upon which GNU Hurd is based
  • mach, a computer program for building RPM packages in a chroot environment


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