To use buttercup, please supply -o outputfile -f fastq file -r fixrank file and -l taxLevel -n tax Name
./Buttercup -o buttercup.out.fq -f <(zcat /mnt/home/alida/scratch/pplacer/vag_cancer/cancer.extendedFrags.fastq.gz) -r /mnt/home/alida/scratch/pplacer/vag_cancer/classify.fixrank -l genus -n Lactobacillus