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DeviceStreams[device]

gives a list of all open streams associated with a device.

DeviceStreams[device,patt]

gives a list of streams whose names match the string pattern patt.

DeviceStreams[device,{patt1,patt2,…}]

gives a list of streams whose names match any of the patti.

Details
Details and Options Details and Options
Examples  
Basic Examples  
Properties & Relations  
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Tech Notes
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DeviceStreams

DeviceStreams[device]

gives a list of all open streams associated with a device.

DeviceStreams[device,patt]

gives a list of streams whose names match the string pattern patt.

DeviceStreams[device,{patt1,patt2,…}]

gives a list of streams whose names match any of the patti.

Details

  • A device can be specified either by a DeviceObject or by a string representing a device class.
  • Streams are automatically opened when a device is opened and are closed when it is closed.
  • DeviceStreams can return InputStream or OutputStream objects.

Examples

open all close all

Basic Examples  (2)

Open a demo device and list its open streams:

Wolfram Language code: dev = DeviceOpen["StreamsDemo", {"in", "out"}]
Wolfram Language code: DeviceStreams[dev]

Look up streams by pattern:

Wolfram Language code: DeviceStreams[dev, "in*"]

Look up streams by a list of patterns:

Wolfram Language code: DeviceStreams[dev, {"i*", "*t"}]
Wolfram Language code: DeviceClose[dev]

Read a list of bytes from an input stream associated with a device:

Wolfram Language code: dev = DeviceOpen["StreamsDemo", "input string"];
Wolfram Language code: str = DeviceStreams[dev]
Wolfram Language code: ReadList[First[str]]

Close the device:

Wolfram Language code: DeviceClose[dev]

Properties & Relations  (1)

Input and output streams associated with a device are included in Streams:

Wolfram Language code: dev = DeviceOpen["StreamsDemo", {"in", "out"}];
Wolfram Language code: SubsetQ[Streams[], DeviceStreams[dev]]

DeviceClose closes any streams to and from the device:

Wolfram Language code: Streams[]
Wolfram Language code: DeviceClose["StreamsDemo"]
Wolfram Language code: Streams[]
Wolfram Research (2014), DeviceStreams, Wolfram Language function, https://reference.wolfram.com/language/ref/DeviceStreams.html.

Text

Wolfram Research (2014), DeviceStreams, Wolfram Language function, https://reference.wolfram.com/language/ref/DeviceStreams.html.

CMS

Wolfram Language. 2014. "DeviceStreams." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/DeviceStreams.html.

APA

Wolfram Language. (2014). DeviceStreams. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/DeviceStreams.html

BibTeX

@misc{reference.wolfram_2026_devicestreams, author="Wolfram Research", title="{DeviceStreams}", year="2014", howpublished="\url{https://reference.wolfram.com/language/ref/DeviceStreams.html}", note=[Accessed: 13-June-2026]}

BibLaTeX

@online{reference.wolfram_2026_devicestreams, organization={Wolfram Research}, title={DeviceStreams}, year={2014}, url={https://reference.wolfram.com/language/ref/DeviceStreams.html}, note=[Accessed: 13-June-2026]}