我有一个由支架组成的大约 2 gb 的基因组，我会随机采样基因组。
我使用了 reformat.sh 但输出只是一个脚手架。我需要全基因组的1/3...
>LGKD01000001.1 Octopus bimaculoides isolate UCB-OBI-ISO-001 Scaffold4_contig_1, whole genome shotgun sequence
GAACAGCATGAATGTTAAAACtgaaatggatgatgatgatgatgatgatgatgatgatggcagcaacAGCCatgattatatttaatatgttgttagttataatcataataatgatgataatgttgataacaaTAATGGTTGCAATAATG
>KQ415657.1 Octopus bimaculoides isolate UCB-OBI-ISO-001 unplaced genomic scaffold Scaffold5, whole genome shotgun sequence
tatatatatatagtcaattcgagGATGTTAGATCGACAATGGGGATTATAGAATCCCACAAAAAATTCCACTGGT
>LGKD01000032.1 Octopus bimaculoides isolate UCB-OBI-ISO-001 Scaffold12_contig_1, whole genome shotgun sequence
GAAGTGGTAAAGAGTgcgatgcgctgaaaaaagagagaacagtacttgaaatGTGGTTTCATTCTagtagtaaat
>LGKD01000033.1 Octopus bimaculoides isolate UCB-OBI-ISO-001 Scaffold16_contig_1, whole genome shotgun sequence
ctgaTCAACAGAatagggccaatcattcttcatgacaatgctcgaccacacgttttaCTAATGA
>LGKD01000034.1 Octopus bimaculoides isolate UCB-OBI-ISO-001 Scaffold22_contig_1, whole genome shotgun sequence
TTATCTATATACGagaatattatctatatataaaggaataccaaaaaaacaagaacaacgggtcattcggaattttcttt
有一个脚本可以做到这一点吗？