No need for nano, as all ready mentioned ,vi , ed ,etc....
The 'echo' command is a new one to me, never thought of using it that way, thanks jggimi,
So many ways to accomplish something, I used the 'cat' command myself,
Code:
cat > /etc/installurl
http://ftp.openbsd.org/pub/OpenBSD
ctrl-d to exit/end and save the file