I suspect that a dive into the Unix side is not what he wants to do. But it's an interesting idea.
My suggestion was primarily for BSAM with POINT. That seems to meet the OP's needs. The BDAM mention was an aside, and would be overkill. Although I might say BDAM deserves more respect than it gets from IBM. Nevertheless, I don't think it would be smart to start developing anything based on it. There are easier and better modern alternatives, such as RRDS, ESDS, LDS, Unix files... I spent a few years working with BDAM programs & files that would have naturally fit LDS. But, LDS hadn't been invented yet, so we made do. sas On Sat, Nov 11, 2023 at 5:19 PM Paul Gilmartin < 00000014e0e4a59b-dmarc-requ...@listserv.uga.edu> wrote: > On 11/11/23 06:59:07, David S. wrote: > > To help resolve a question posted to a LinkedIn group I manage: > > www.linkedin.com/feed/update/urn:li:groupPost:910927-7128598004344786944 > > ... I'd like to find out if there's any way to achieve *true* > > Skip-Sequential processing with a Fixed Block Sequential File with a > fairly > > short record length (i.e. DCB=(DSORG=PS,RECFM=FB,LRECL=80)? > > For example: Begin sequential processing at record number 100, *without* > > having to read the first 99 records. > > > > > This feels like a job for DSFS. > <https://www.ibm.com/docs/en/zos/3.1.0?topic=zos-data-set-file-system-dsfs > > > > UNIX readily solves the problem with seek() and DSFS is supposed > to mimic a UNIX file with the content of a Classic data set. > > Where's the User's Guide for DSFS? > > Is the skip count fixed, or is it dynamic, varying up or down > with successive executions of your program? > > -- > gil >
