Measures TTFB (Time To First Byte), inspired by ttfb.sh, written by @jaygooby and @sandeepraju
go get github.com/hmage/ttfb
ttfb [-n int] <url> [url ...]
-n int Number of times to fetch the url (default 1)
Output is coded to resemble output of ttfb.sh