SDIR=/data;
cd $SDIR/pca;
ls

head -20 genotypes_small.ind

head -20 genotypes_small.snp

head -20 genotypes_small.geno | cut -c1-100

wc -l genotypes_small.ind
wc -l genotypes_small.snp

head -1 genotypes_small.geno | wc -c

wc -l genotypes_small.geno

awk '{print $3}' genotypes_small.ind | sort | uniq -c | head -20

awk '{print $3}' genotypes_small.ind | sort | uniq -c | awk '$1>1' | wc -l