TERSE is an IBMarchive file format that supports lossless compression. A TERSE file may contain a sequential data set, a partitioned data set (PDS), partitioned data set extended (PDSE), or a large format dataset (DSNTYPE=LARGE). Any record format (RECFM) is allowed as long as the record length is less than 32 K (64 K for RECFM=VBS). Records may contain printer control characters.[1]
The Terse algorithm was proprietary to IBM; however, IBM has released an open source Java decompressor under the Apache 2 license.[4] The compression/decompression program (called terse and unterse)—AMATERSE or TRSMAIN—is available from IBM for z/OS; the z/VM equivalents are the TERSE and DETERSE commands, for sequential datasets only. Versions for PC DOS, OS/2, AIX, Windows (2000, XP, 2003), Linux, and Mac OS/X are available online.[5]
Terse can be used as a general-purpose compression/decompression tool. IBM also distributes downloadable Program temporary fixs (PTFs) as tersed datasets. Terse is also used by IBM customers to package diagnostic information such as z/OS dumps and traces, for transmission to IBM.
Referencesedit
^IBM Corporation (25 August 2016). "AMATERSE: Pack and unpack a data set". IBM Knowledge Center. Retrieved Sep 4, 2016.
^Miller, Victor S.; Wegman, Mark N. (1988). "Variations on a theme by Ziv and Lempel (Data compression)". IEEE International Conference on Communications, - Spanning the Universe. pp. 390–394. doi:10.1109/ICC.1988.13597. S2CID 56571935. Retrieved Sep 4, 2016.
^Lalonde, Bill. "Terse/MVS". Big Iron. Retrieved Sep 5, 2016.
terse, file, format, terse, archive, file, format, that, supports, lossless, compression, terse, file, contain, sequential, data, partitioned, data, partitioned, data, extended, pdse, large, format, dataset, dsntype, large, record, format, recfm, allowed, long. TERSE is an IBM archive file format that supports lossless compression A TERSE file may contain a sequential data set a partitioned data set PDS partitioned data set extended PDSE or a large format dataset DSNTYPE LARGE Any record format RECFM is allowed as long as the record length is less than 32 K 64 K for RECFM VBS Records may contain printer control characters 1 TERSE file formatFilename extension trsDeveloped byIBMInitial release1984Type of formatData compressionOpen format Yes Terse files are compressed using a modification of Ziv Lempel compression algorithm developed by Victor S Miller and Mark Wegman at the Thomas J Watson Research Center in Yorktown Heights New York 2 3 The Terse algorithm was proprietary to IBM however IBM has released an open source Java decompressor under the Apache 2 license 4 The compression decompression program called terse and unterse AMATERSE or TRSMAIN is available from IBM for z OS the z VM equivalents are the TERSE and DETERSE commands for sequential datasets only Versions for PC DOS OS 2 AIX Windows 2000 XP 2003 Linux and Mac OS X are available online 5 Contents 1 AMATERSE 2 Uses 3 References 4 External linksAMATERSE editThe following JCL can be used to invoke AMATERSE on z OS TRSMAIN uses INFILE and OUTFILE instead of SYSUT1 and SYSUT2 6 7 jobname JOB stepname EXEC PGM AMATERSE PARM ppppp SYSPRINT DD SYSOUT SYSUT1 DD DISP SHR DSN input dataset SYSUT2 DD DISP NEW CATLG DCB ddd DSN output dataset SPACE space parameters SYSUT3 DD DISP NEW DELETE SPACE space parameters Optional temporary datasetUses editTerse can be used as a general purpose compression decompression tool IBM also distributes downloadable Program temporary fixs PTFs as tersed datasets Terse is also used by IBM customers to package diagnostic information such as z OS dumps and traces for transmission to IBM References edit IBM Corporation 25 August 2016 AMATERSE Pack and unpack a data set IBM Knowledge Center Retrieved Sep 4 2016 Miller Victor S Wegman Mark N 1988 Variations on a theme by Ziv and Lempel Data compression IEEE International Conference on Communications Spanning the Universe pp 390 394 doi 10 1109 ICC 1988 13597 S2CID 56571935 Retrieved Sep 4 2016 Lalonde Bill Terse MVS Big Iron Retrieved Sep 5 2016 openmainframeproject tersedecompress GitHub Retrieved 2020 11 28 Hercules 390 Discussion group for users of the Hercules ESA 390 mainframe emulator Retrieved Sep 5 2016 IBM Corporation 25 August 2016 Specifying the JCL statements for AMATERSE IBM Knowledge Center Retrieved Sep 4 2016 ppppp is PACK compress SPACK compress slower and compresses better or UNPACK uncompress External links editTerse PC versions at Vetusware nbsp This computing article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Terse file format amp oldid 1219979490, wikipedia, wiki, book, books, library,
