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Add fabric /build/bin to your PATH so that you can easily execute the binaries.
Set FABRIC_CFG_PATH to fabric /sampleconfig directory, which contains sample orderer.yaml, peer.yaml, configtx.yaml, and msp for a SampleOrg.
Make sure that the listen addresses in orderer.yaml and peer.yaml do not overlap. By default, Admin.ListenAddress of orderer.yaml and operations.ListenAddress of peer.yaml are set to port 9443. It is recommended to change the port of operations.ListenAddress to 9444.
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