User's Guide

VERIFY

DITTO command -- Verify DITTO devices

Function:

Compares the file contents of the DITTO input and output devices.

Parameters:

Subcommand -FILE:
Verifies one or more files. The specified number of files on the input and output devices is compared.

NFILES(--)
Number of files. The number of files to compare between the input and output DITTO devices. The default is to terminate when an end of volume is detected.
Subcommand -RECORD:
Verifies records within a single file. The specified number of records in the current file of the input and output devices is compared.

NRECS(--)
Number of records. The number of records to compare within a single file of the input and output DITTO devices. The default is to terminate when an end of file is detected.

Examples:

  1. DITTO> verify-record nrecs=10

    The user has requested to verify the first ten records from the current position of the input and output devices.

Description/Algorithm:

The number of records (or files) are compared on the input and output devices. The comparison begins at the current position of each device. If a difference is found, the physical record number and byte offset within the record are output in an error message.

Nonfatal Error Messages:

    None.

Fatal Error Messages:

    None.

User Note:

    None.