[Home](./index.md) > [bitburner](./bitburner.md) > [NS](./bitburner.ns.md) > [peek](./bitburner.ns.peek.md)
## NS.peek() method
Get a copy of the data from a port without popping it.
Signature:
```typescript
peek(port: number): any;
```
## Parameters
| Parameter | Type | Description |
| --- | --- | --- |
| port | number | Port to peek. Must be an integer between 1 and 20. |
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.