install zgrab on ubuntu

gistfile1.txt

cd
mkdir work
cd work
git clone https://github.com/zmap/zmap.git
apt-get install build-essential cmake libgmp3-dev gengetopt libpcap-dev flex byacc libjson-c-dev pkg-config libunistring-dev
cd zmap
cmake .
make -j4
make install
cd
wget https://storage.googleapis.com/golang/go1.8.1.linux-amd64.tar.gz
tar -C /usr/local -xzf go1.5.3.linux-amd64.tar.gz
export PATH=$PATH:/usr/local/go/bin
go version
export GOPATH=/root/work
go get github.com/zmap/zgrab
go build github.com/zmap/zgrab