Programmer Humor

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submitted 9 months ago by [email protected] to c/[email protected]

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[–] [email protected] 4 points 9 months ago* (last edited 9 months ago)

As what often happens, using \ for paths is for backwards compatibility.

Neither CP/M nor MS-DOS 1.0 had folders. When folders were added in MS-DOS 2.0, the syntax had to be backwards compatible. DOS already used forward slashes for command-line options (e.g. DIR /W) so using them for folders would have been ambiguous - does that DIR command have a /W option, or is it viewing the contents of the W directory at the root of the drive? Backslashes weren't used for anything so they used them for folders.

This is the same reason why you can't create files with device names like con, lpt1, and so on. DOS 2.0 has to retain backwards compatibility with 1.0 where you could do something like TYPE foo.txt > LPT1 to send a document to a printer. The device names are reserved globally so they can work regardless of what folder you're in.