This function helps to create your own searchable (blastable) blast database from the FASTA file.
Arguments for the program:
-i: Fasta file
-p: T or F (T if it input type is protein, F if it is nucleotide sequence)
-o: T or F (T to make the output database NCBI styled (deflines), F to none )
formatdb -i input.fasta -p F -o F