In this example, IEBUPDTE is used to copy a sequential data set from one DASD volume to another. User labels are processed by user exit routines.

  //LABELS   JOB  ...
  //STEP1    EXEC PGM=IEBUPDTE,PARM=(MOD,,INTLRTN)
  //SYSPRINT DD  SYSOUT=A
  //SYSUT1   DD  DSNAME=OLDMAST,DISP=OLD,LABEL=(,SUL),
  //             VOLUME=SER=111111,UNIT=disk
  //SYSUT2   DD  DSNAME=NEWMAST,DISP=(NEW,KEEP),LABEL=(,SUL),
  //             UNIT=disk,VOLUME=SER=XB182,
  //             SPACE=(TRK,(5,10))
  //SYSIN    DD  DSNAME=INPUT,DISP=OLD,LABEL=(,SUL),
  //             VOLUME=SER=222222,UNIT=disk
  /*

The control statements are as follows:

• SYSUT1 DD defines the input sequential data set, called OLDMAST, which resides on a disk volume.
• SYSUT2 DD defines the output sequential data set, called NEWMAST, which will reside on a disk volume.
• SYSIN DD defines the control data set. The contents of this disk-resident data set in this example are:

    ./      REPRO   LIST=ALL,INHDR=INHRTN,INTLR=INTRTN,         C
    ./              OUTHDR=OUTHRTN,OUTTLR=OUTTRN
    ./      ENDUP

• The REPRO function statement indicates that the existing input sequential data set is copied to the output data set. This output data set is listed on the message data set. The user's label processing routines are to be given control when header or trailer labels are encountered on either the input or the output data set.
• ENDUP indicates the end of the control data set.