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Full Discussion: EBCDIC File Split Based On Record Key
Top Forums Shell Programming and Scripting EBCDIC File Split Based On Record Key Post 302962986 by Don Cragun on Tuesday 22nd of December 2015 03:31:54 AM
Old 12-22-2015
There is an awful lot that is unspecified here:
  • What operating system are you using?
  • Is there any binary data in the COBOL files you're processing, or is it all text.
  • Is the record key the entire 422 byte record? If not what part of the record constitutes the key?
  • Why do you say the input is variable length and then say that the record length is 422 bytes per record and 77 records per block? What is variable other than the number of records in the file?
If you're trying to process EBCDIC files on an ASCII based system, the dd utility will probably be at the base of your processing. Look at the dd man page on your system and see if something like the following would be a good start to getting a file you can then split awk or grep:
Code:
dd if=YourEBCDICInputFileName of=YourASCIIOutputFileName ibs=422x77 cbs=422 conv=ascii,unblock,sync

and, after splitting YourASCIIOutputFileName into the files you want based on your keys, you could convert them back into fixed-length, blocked, EBCDIC files using dd again with obs=422x77 instead of ibs=422x77 and conv=ebcdic,block... and appropriate if= and of= parameters.
This User Gave Thanks to Don Cragun For This Post:
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