---
title: Query in the Flux REPL
description: Query InfluxDB using the Flux REPL. Discover how to query data in InfluxDB 2.5 using the Flux REPL.
url: https://docs.influxdata.com/influxdb/v2/query-data/execute-queries/flux-repl/
estimated_tokens: 334
product: InfluxDB OSS v2
version: v2
---

# Query in the Flux REPL

This page documents an earlier version of InfluxDB OSS. [InfluxDB 3 Core](/influxdb3/core/) is the latest stable version.

#### API token hashing is enabled by default in InfluxDB OSS 2.9.0

Stronger token security: tokens are stored as hashes on disk, so a copy of the database file doesn’t expose usable tokens. Existing tokens are hashed on first startup and the original strings can’t be recovered afterward — **capture any plaintext tokens you still need before you upgrade**.

For more information, see [Token hashing](/influxdb/v2/admin/tokens/#token-hashing).

The [Flux REPL](/influxdb/v2/tools/flux-repl/) starts an interactive Read-Eval-Print Loop (REPL) where you can write and execute Flux queries.

```sh
./flux repl
```

For more information, see [Use the Flux REPL](/influxdb/v2/tools/flux-repl/).

[query](/influxdb/v2/tags/query/)