DOS(redirected from cmd abc's)
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DOS (Disk Operating System)a COMPUTER program which enables a computer to record and retrieve data from a rotating magnetic or vinyl disk. The most widely-used disk operating system is MSDOS, which is used on computers that are compatible with the IBM personal computer.
Collins Dictionary of Business, 3rd ed. © 2002, 2005 C Pass, B Lowes, A Pendleton, L Chadwick, D O’Reilly and M Afferson