wget ftp://ftp-trace.ncbi.nlm.nih.gov/sra/sra-instant/reads/ByExp/sra/SRX/SRX271/SRX271403/SRR833686/SRR833686.sra -O Yki_S2_ChIP_rep1-GSM1128467.sra
wget ftp://ftp-trace.ncbi.nlm.nih.gov/sra/sra-instant/reads/ByExp/sra/SRX/SRX271/SRX271404/SRR833687/SRR833687.sra -O Yki_S2_ChIP_rep2-GSM1128468.sra
wget ftp://ftp-trace.ncbi.nlm.nih.gov/sra/sra-instant/reads/ByExp/sra/SRX/SRX271/SRX271405/SRR833688/SRR833688.sra -O Yki_S2_ChIP_input-GSM1128469.sra