NAME

cvftest - dmsdos CVF identification tool

SYNOPSIS

cvftest filename [-v]

DESCRIPTION

cvftest tries to find out whether the file (or device) filename is a CVF. It does so by reading the first 512 bytes from filename and checking for certain strings.

If filename is just a minus sign (-) the data are read from standard input.

If the switch -v is given the result of the test is printed to standard output including a description about what kind of CVF was detected.

RETURN VALUES

cvftest returns zero (i.e. true) if filename has been recognized as a CVF. Otherwise it returns 1. A value >1 indicates an error (e.g. filename does not exist or cannot be read).

BUGS

This program is so simple that it could be a shell script. But I'm not a shell hacker, so it's C.

The test is not idiot-proof. As it just checks for some magic values, it might eventually misidentify other files as CVFs. These cases are supposed to be extremely unlikely, though, and have never been reported yet. But if you take a look at the source you easily find a way to fool the program :-)

SEE ALSO

Refer to the dmsdos main documentation for further information.