Sometimes, you may need to see the download speed on your FreeBSD server . The fetch command with /dev/null is an easy way to see this . The /dev/null is a null interface which is blackhole in unix based operating systems . It won’t save anything instead it redirects everything to null. So the command for this is :
fetch -o /dev/null yourlink adress . If you want to see a realistic output , try downloading a large file and run it for atleast few minutes . Large file for eg : you can copy the link address of a centos image from their download page and use it with the fetch command