Dhead [ -number-of-records ] [ input-file.. ]
Dhead selects the top number-of-records records from each input-file. If an input file has less than the -number-of-records records, all the records of that file are selected. (It does not affect to the next input file).
When there are more than one input-files, "filename:" field is added to each output record unless the input file is not standard input.
When the number-of-records parameter is not given, 1 is assumed.
See the manual of D_msg.
MIYAZAWA Akira