bitburner-src/markdown/bitburner.ns.peek.md

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## NS.peek() method

Get a copy of the data from a port without popping it.

**Signature:**

```typescript
peek(portNumber: number): any;
```

## Parameters

|  Parameter | Type | Description |
|  --- | --- | --- |
|  portNumber | number | Port to peek. Must be a positive integer. |

**Returns:**

any

Data in the specified port.

## Remarks

RAM cost: 0 GB

This function is used to peek at the data from a port. It returns the first element in the specified port without removing that element. If the port is empty, the string “NULL PORT DATA” will be returned.