# How to Force Logstash to Reparse a File?

By default, Logstash's file input plugin tracks the parts of a file it has already processed. However, when you want Logstash to reparse a file starting from the beginning, you would need to set the `sincedb_path` option to `/dev/null` as demonstrated in the following code:

```text
[label /etc/logstash/conf.d/logstash.conf]
input {
  file {
    path => ["/var/logs/my_logfile"]
    start_position => "beginning"
    sincedb_path => "/dev/null"
  }
}
```

This configuration sets up the Logstash [file input](https://www.elastic.co/guide/en/logstash/current/plugins-inputs-file.html) plugin to read logs from the specified file path. It instructs Logstash to read from the beginning of the file by setting its `start_position` to `beginning`. Additionally, it disables `sincedb` tracking by assigning `/dev/null`, enabling the file to be reprocessed.