Thanks everyone. This example using Perl was perfect. /Ray -----Original Message----- From: Bryan Baldus [mailto:[log in to unmask]] Sent: Thursday, August 28, 2014 2:48 PM To: Code for Libraries; Schwartz, Raymond Subject: RE: [CODE4LIB] Anybody know a way to add a MARC tag on-mass to a file of MARC records On Thursday, August 28, 2014 1:27 PM, Ray Schwartz wrote: >Anybody know a way to add a MARC tag on-mass to a file of MARC records. I need to add the tag 918 $a with the contents "DELETE" to each of the records. What language are you using? For Perl, using MARC::Record, there is an example at [1]. [1] http://search.cpan.org/dist/MARC-Record/lib/MARC/Doc/Tutorial.pod#Adding_a_field I hope this helps, Bryan Baldus [log in to unmask] [log in to unmask] http://home.comcast.net/~eijabb/