"Bad command or file name" is a common error message in Microsoft's MS-DOS and some other operating systems.
In command.com, the message Bad command or file name is produced if the user mistypes the first word of a command line. This first word must be either the name of a built-in "command", or of an executable file or batch file. Therefore the error was printing what, to the programmer, was an accurate description of the problem: there was no such command and there was no such file. Novices, in general, had trouble understanding the message, so later operating systems changed it; for instance, OS/2 and the Windows NT (and newer) family use
Some early Unix shells produced the equally-cryptic
Famous quotes containing the words bad, command and/or file:
“[A] sullen-wise Man is as bad as a good-natured Fool. Knowledge, softened with Complacency and good Breeding, will make a Man equally beloved and respected; but when joined with a severe, distant and unsociable Temper, it creates rather Fear than Love.”
—Richard Steele (1672–1729)
“There are confessable agonies, sufferings of which one can positively be proud. Of bereavement, of parting, of the sense of sin and the fear of death the poets have eloquently spoken. They command the world’s sympathy. But there are also discreditable anguishes, no less excruciating than the others, but of which the sufferer dare not, cannot speak. The anguish of thwarted desire, for example.”
—Aldous Huxley (1894–1963)
“Probably nothing in the experience of the rank and file of workers causes more bitterness and envy than the realization which comes sooner or later to many of them that they are “stuck” and can go no further.”
—Mary Barnett Gilson (1877–?)