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The jcomp utility provides a mechanism to compare records from the same or different Hash files or directories.

jcomp {-Options} {DICT} filename{,section} {recordlist | *}


jcomp {DICT} filename{,section} {recordlist | *} {(Options}


  • filename is the name of a valid file. The file type must be one of the supported jBASE file types.
  • section is the name of a data section
  • recordlist is the list of record identifiers to be compared. An asterisk (*) denotes all records in the file. If the recordlist is omitted then an active SELECT list, if present, is used.
  • The options are as follows:
-L or (L
Restrict error display to single line.
-N or (N
No paging.
-P or (P
Output to printer.
-S or (S
Suppress matching records.
-T or (T
Trim source before compare.
-V or (V
Verbose display of non-matching records.

The resulting output of a comparison will prepend the line with a (the line is Changed) or (the line is Inserted). Using the option will hilite the actual changes on a Changed line.


Once the initial jcomp command has been submitted, the user will get a with: prompt. It is here that file and/or records to be compared, are to be specified. A left parenthesis specifies that the records are to be compared in another file.  

Examples of use may be as: 

comp File1 * (S

Compares all records from File1 with records with the same item-ids in File2. Suppresses the output of any records that are exactly the same from both files.

jcomp File1 rec1
with: rec2

Compares rec1 with rec2 in the File1 file.

jcomp File1 rec1 rec2
with:(File2 rec1 rec2

Compares the records rec1 and rec2 in File1 with the records rec1 and rec2 in File2 respectively.


123 Records selected


Uses the MYLIST select-list to compare the records in the CUSTOMERS file with records in the PROSPECTS file. Suppresses the output of any records that are exactly the same from both files.

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