001、
(base) root@PC1:/home/test2# ls a.fasta (base) root@PC1:/home/test2# cat a.fasta ## 测试fasta文件 >scaffold_1 CCCGGGTAAAACGGGTCTTCAAGAAAACGCTCCTCCGTTAATGCCGGCCGATTCAAATAA CGTTCAAGTTTTTCTTGCGGCGGACAATCAAAGAATGCAGCTTCTACGGTTGCTTCCGTT GGCCCATAGGAATTGGTTATT >scaffold_2 CACGCCGCCAGCGTTCGTCCTGAGCCAGGATCAAACTCTCCGATAAATGGATCACAGGTT TAGTTAACTAGGTCAATAC >scaffold_3 TTGATCCAGTGGCTCCGGTTACTCCAGTTGATCCTGTTGCGCCTGTTGCTCCAGTTTCTC CTGTTGCTCCTGTTGCTCCTGTTGATCCCGTTGCACCTGTTGGTCCAGTCGGTCCAATTC >scaffold_4 CCTGAGCCAGGATCAAACTCTCCGATAAATGGATCACAGGTTAAGTTCACCGCATCCTGC TGTTTTTTTGATTTATTTTCCCGCCGCTGTGAGCTTGTTTTCTCAGAAGCGCATCAGCGA >scaffold_5 TCACCCCGGAATCAGCTGACATAGAAGCACTGAAATCAGCACTGAAGGAAACCCTGCCGG ## 整合脚本及结果 (base) root@PC1:/home/test2# awk '{if($0 ~ />/) {print $0} else {printf("%s", $0)}}' a.fasta | sed 's/>/\n>/g' | sed '$ s/$/\n/' | sed 1d >scaffold_1 CCCGGGTAAAACGGGTCTTCAAGAAAACGCTCCTCCGTTAATGCCGGCCGATTCAAATAACGTTCAAGTTTTTCTTGCGGCGGACAATCAAAGAATGCAGCTTCTACGGTTGCTTCCGTTGGCCCATAGGAATTGGTTATT >scaffold_2 CACGCCGCCAGCGTTCGTCCTGAGCCAGGATCAAACTCTCCGATAAATGGATCACAGGTTTAGTTAACTAGGTCAATAC >scaffold_3 TTGATCCAGTGGCTCCGGTTACTCCAGTTGATCCTGTTGCGCCTGTTGCTCCAGTTTCTCCTGTTGCTCCTGTTGCTCCTGTTGATCCCGTTGCACCTGTTGGTCCAGTCGGTCCAATTC >scaffold_4 CCTGAGCCAGGATCAAACTCTCCGATAAATGGATCACAGGTTAAGTTCACCGCATCCTGCTGTTTTTTTGATTTATTTTCCCGCCGCTGTGAGCTTGTTTTCTCAGAAGCGCATCAGCGA >scaffold_5 TCACCCCGGAATCAGCTGACATAGAAGCACTGAAATCAGCACTGAAGGAAACCCTGCCGG