cptape reads a tape in one shot, placing each tape file into a separate disk
file and logging the information about record sizes.

cptape places each tape file into a separate disk file named 'file.nn', where
nn is the two-digit sequential number of the file on the tape (in decimal
starting with 01). These files are created in the current directory. For this
reason, when reading a new tape, one would normally create a directory for it,
cd to it, and run cptape from there.

Normally cptape should be run as follows:

cptape -l tapefiles <special>

where <special> is the name of the raw tape device special file, e.g.,
/dev/nrmt0. This will create a file named 'file.nn' for each file on the tape
and a file named 'tapefiles' with a list of all tape files with the record size
for each.
