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P4 Server Administration Documentation | 2025.1

# Create streams

p4 switch -c stream creates a new stream and populates it with a copy of all the files in the current stream.

    p4 switch -c dev
    dev

A quick comparison reveals that the two streams contain identical files:

    p4 diff2 //stream/main/... //stream/dev/...
    ==== //stream/main/a/test1.txt#1 (text) - //stream/dev/a/test1.txt#1 (text) ==== identical
    ==== //stream/main/a/test2.txt#1 (text) - //stream/dev/a/test2.txt#1 (text) ==== identical

The `-P parent` option specifies that `p4 switch -c` should create a new stream with the specified stream as its parent, rather than the default of the current stream; thus the new stream will be populated with the files from the specified parent stream, rather than the files from the current stream.

    p4 switch -P main -c child_of_main
    child_of_main

As the following output of

`p4 stream -o //stream/child_of_main`

demonstrates, `//stream/main` is the parent of `//stream/child_of_main`:

Copy

    # A Helix Stream Specification.
    #
    #  Stream:       The stream field is unique and specifies the depot path.
    #  Update:       The date the specification was last changed.
    #  Access:       The date the specification was originally created.
    #  Owner:        The user who created this stream.
    #  Name:         A short title which may be updated.
    #  Parent:       The parent of this stream, or 'none' if Type is mainline.
    #  Type:         Type of stream provides clues for commands run
    #                between stream and parent.  Five types include 'mainline',
    #                'release', 'development' (default), 'virtual' and 'task'.
    #  Description:  A short description of the stream (optional).
    #  Options:      Stream Options:
    #                       allsubmit/ownersubmit [un]locked
    #                       [no]toparent [no]fromparent mergedown/mergeany
    #  Paths:        Identify paths in the stream and how they are to be
    #                generated in resulting clients of this stream.
    #                Path types are share/isolate/import/import+/exclude.
    #  Remapped:     Remap a stream path in the resulting client view.
    #  Ignored:      Ignore a stream path in the resulting client view.
    #
    # Use *'p4 help stream'* to see more about stream specifications and command.

    Stream: //stream/child_of_main

    Update: 2015/02/06 10:57:04

    Access: 2015/02/06 10:57:04

    Owner:  jschaffer

    Name:   //stream/child_of_main (created by switch command)

    Parent: //stream/main

    Type:   development

    Options:      allsubmit unlocked toparent fromparent mergeany

    Paths:
        share ...

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