tool/travis/setup.sh - dart-protoc-plugin - Git at Google

 #!/usr/bin/env bash
 set -ev

 mkdir $HOME/protoc
 pushd $HOME/protoc
 wget https://github.com/google/protobuf/releases/download/v$PROTOC_VERSION/protoc-$PROTOC_VERSION-linux-x86_64.zip
 unzip protoc-$PROTOC_VERSION-linux-x86_64.zip
 popd
	#!/usr/bin/env bash
	set -ev

	mkdir $HOME/protoc
	pushd $HOME/protoc
	wget https://github.com/google/protobuf/releases/download/v$PROTOC_VERSION/protoc-$PROTOC_VERSION-linux-x86_64.zip
	unzip protoc-$PROTOC_VERSION-linux-x86_64.zip
	popd