http://linux1.fnal.gov/linux/scientific/7x/contexts/fermilab/$basearch http://ftp.scientificlinux.org/linux/scientific/7x/contexts/fermilab/$basearch http://ftp1.scientificlinux.org/linux/scientific/7x/contexts/fermilab/$basearch http://ftp2.scientificlinux.org/linux/scientific/7x/contexts/fermilab/$basearch ftp://ftp.scientificlinux.org/linux/scientific/7x/contexts/fermilab/$basearch