MS DOS

MS DOS : It is text based OS.Originally written by Tim Paterson & introduced by MS in Aug. 1981.
MS DOS Commands : 
(1) verify on /verify off :- verify files correctly written to a disk or not.
(2) ver :- display version of a window.
(3) undelete :- restore delete files.
(4) time :- view or edit computer time.
(5) shutdown :- shutdown a window.
(6) ren/rename :- change name of file or directory.
(7) color :- change background color or text color.
(8) cd :- change directory.
(9) chcp :- display active page code.
(10) del :- delete one or more files.
(11) deltree :- delete directory (permanently).
(12) dir :- display content of directory.
(13) edit :- full screen text editor.
(14) rmdir :- remove directory.
(15) mkdir :- make directory.
(16) cd.. :- comes one step back.
(17) cls :- clear the screen.
(18)  comp :- compare two files.
(19) edlin :- edit line by line 
(20) exit :- exit the command prompt.

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