1835f6802SDirk Vogt#-------------------------------------------- 2835f6802SDirk Vogt# marc21: file(1) magic for MARC 21 Format 3835f6802SDirk Vogt# 4835f6802SDirk Vogt# Kevin Ford (kefo@loc.gov) 5835f6802SDirk Vogt# 6835f6802SDirk Vogt# MARC21 formats are for the representation and communication 7835f6802SDirk Vogt# of bibliographic and related information in machine-readable 8835f6802SDirk Vogt# form. For more info, see http://www.loc.gov/marc/ 9835f6802SDirk Vogt 10835f6802SDirk Vogt 11835f6802SDirk Vogt# leader position 20-21 must be 45 12835f6802SDirk Vogt20 string 45 13835f6802SDirk Vogt 14835f6802SDirk Vogt# leader starts with 5 digits, followed by codes specific to MARC format 15*0a6a1f1dSLionel Sambuc>0 regex/1l (^[0-9]{5})[acdnp][^bhlnqsu-z] MARC21 Bibliographic 16835f6802SDirk Vogt!:mime application/marc 17*0a6a1f1dSLionel Sambuc>0 regex/1l (^[0-9]{5})[acdnosx][z] MARC21 Authority 18835f6802SDirk Vogt!:mime application/marc 19*0a6a1f1dSLionel Sambuc>0 regex/1l (^[0-9]{5})[cdn][uvxy] MARC21 Holdings 20835f6802SDirk Vogt!:mime application/marc 21*0a6a1f1dSLionel Sambuc0 regex/1l (^[0-9]{5})[acdn][w] MARC21 Classification 22835f6802SDirk Vogt!:mime application/marc 23*0a6a1f1dSLionel Sambuc>0 regex/1l (^[0-9]{5})[cdn][q] MARC21 Community 24835f6802SDirk Vogt!:mime application/marc 25835f6802SDirk Vogt 26835f6802SDirk Vogt# leader position 22-23, should be "00" but is it? 27*0a6a1f1dSLionel Sambuc>0 regex/1l (^.{21})([^0]{2}) (non-conforming) 28835f6802SDirk Vogt!:mime application/marc 29