grep "chromosome 1[, ]" GRCh38.p13.genome.fa > chr1
grep "chromosome 2[, ]" GRCh38.p13.genome.fa > chr2
grep "chromosome 3[, ]" GRCh38.p13.genome.fa > chr3
grep "chromosome 4[, ]" GRCh38.p13.genome.fa > chr4
grep "chromosome 5[, ]" GRCh38.p13.genome.fa > chr5
grep "chromosome 6[, ]" GRCh38.p13.genome.fa > chr6
grep "chromosome 7[, ]" GRCh38.p13.genome.fa > chr7
grep "chromosome 8[, ]" GRCh38.p13.genome.fa > chr8
grep "chromosome 9[, ]" GRCh38.p13.genome.fa > chr9
grep "chromosome 10[, ]" GRCh38.p13.genome.fa > chr10
grep "chromosome 11[, ]" GRCh38.p13.genome.fa > chr11
grep "chromosome 12[, ]" GRCh38.p13.genome.fa > chr12
grep "chromosome 13[, ]" GRCh38.p13.genome.fa > chr13
grep "chromosome 14[, ]" GRCh38.p13.genome.fa > chr14
grep "chromosome 15[, ]" GRCh38.p13.genome.fa > chr15
grep "chromosome 16[, ]" GRCh38.p13.genome.fa > chr16
grep "chromosome 17[, ]" GRCh38.p13.genome.fa > chr17
grep "chromosome 18[, ]" GRCh38.p13.genome.fa > chr18
grep "chromosome 19[, ]" GRCh38.p13.genome.fa > chr19
grep "chromosome 20[, ]" GRCh38.p13.genome.fa > chr20
grep "chromosome 21[, ]" GRCh38.p13.genome.fa > chr21
grep "chromosome 22[, ]" GRCh38.p13.genome.fa > chr22
grep "chromosome 23[, ]" GRCh38.p13.genome.fa > chr23



