A TLS Banner Grabber, in Go
You will need to have a valid $GOPATH set up, for more information about $GOPATH, see https://golang.org/doc/code.html.
The ztools repository is located at https://github.com/zmap/ztools.
Once you have a working $GOPATH, run:
go get github.com/zmap/zgrab
This will install zgrab and ztools under $GOPATH/src/github.com/zmap/zgrab and $GOPATH/src/github.com/zmap/ztools.
$ cd $GOPATH/src/github.com/zmap/zgrab
$ go build
./zgrab --help
$ zmap -p 443 --output-fields=* | ztee --output-file=results.csv | zgrab --port 443 --tls --data=./http-req --output-file=banners.json
zgrab requires go version of at least 1.3.3. Please note that this is newer than the version included in Ubuntu 14.04 apt repository.