# verify-index command

The verify-index BASIC program verifies
the integrity of one or all B-tree indexes in a specified file name.

## Syntax

```
 verify-index dict file.reference a.code{(options)}
 verify-index dict file.reference attribute.defining.item{(options)}
 verify-index dict file.reference* {(options)}
 verify-index ?
```

## Parameter(s)

| a.code | Specifies the a processing code to be used in forming the keys to the index. The processing code must include an attribute number. | |
| --- | --- | --- |
| * | Designates all indexes. | |
| ? | Displays online help for this command. | |
| options | a | Verifies all indexes in the account or system. |
| c | Compares the file to the index only. | |
| e | Creates an error log. When this option is specified, the command prompts for the error log file and item (VME only). | |
| f | Displays link and node-IDs during verification (VME only). | |
| i | Displays item-IDs (VME only). | |
| k | Verifies links and nodes (VME only). | |
| l | Locks each data item as it is verified (VME only). | |
| m | Suppresses all messages (VME only). | |
| n | The n variable is an integer specifying a limit for the number of consecutive errors that can occur during index verification before moving on to the next index or file (FSI only). | |
| n | Affects output to the terminal only. Prevents output from pausing at the end of each (terminal) page of output. | |
| o | Reports missing item-IDs and locates items indexed in the wrong place. While using this option makes the process run slower, it increases the reliability and effectiveness of the process (VME only). | |
| p | Directs the report to the system printer via the spooler. | |
| r | Inhibits index recreation when there is a link error (VME only). | |
| s | Suppresses display of item counter (VME only). | |
| v | Verifies that the data exists for the given indexes. This is used in the cases where the index contains pointers to item-IDs that have been deleted; this is not typical (VME only). | |
| x | Suppresses automatic fix of bad indexes. This option produces a report only (VME only). | |
| z | Stops processing after link and node verification (VME only). | |

## Description

With no options specified, the process examines each item in the file and verifies each of the
 indexes specified. A counter displays on the screen for monitoring the progress of the
 verify-index command.

 To verify a single index, the TCL casing set by the case command must match
 the casing of the index.

## Example(s)

**Example 1**

The following example verifies the index on attribute 1 of the entity
 file.

```
 verify-index entity a1
```

 **Example 2**

The following example verifies all indexes in the entity file.

```
 verify-index entity * (o
```

## See also

- [a (algebraic) processing code](https://d3codex.com/processingcodes/a-algebraic-processing-code/)
- [B-tree](https://d3codex.com/definitions/b-tree/)
- [clear-index command](https://d3codex.com/tcl/clear-index-command/)
- [create-index command](https://d3codex.com/tcl/create-index-command/)
- [delete-index command](https://d3codex.com/tcl/delete-index-command/)
- [indexer command](https://d3codex.com/tcl/indexer-command/)
- [key statement](https://d3codex.com/pickbasic-flashbasic/key-statement/)
- [nframe-index command](https://d3codex.com/tcl/nframe-index-command/)
- [vi.dump file](https://d3codex.com/systemfiles/vi-dump-file/)

---
Source: https://d3codex.com/tcl/verify-index-command/ - part of the D3Codex reference.