每场比赛后附加计数

Question

示例输入：

>Sample GJVT7LS03DEUKL
AAACTCCGCAATGCGCGCAAGC
>Sample GJVT7LS03CXJ53
AAACTCCGCAATGCGCGCAAGCGTGACGGGG
>Sample GJVT7LS03DJOYJ
AAACTCC
>Sample GJVT7LS03DMERH
AAACTCCGCAATGCGCGCAAGCGTGACGGGGGGAC
>Sample GJVT7LS03DN2RB
AAACTCCGCAATGCGCGCAAGCGTGACGG

我想要的是什么：

>Sample_1 GJVT7LS03DEUKL
AAACTCCGCAATGCGCGCAAGC
>Sample_2 GJVT7LS03CXJ53
AAACTCCGCAATGCGCGCAAGCGTGACGGGG
>Sample_3 GJVT7LS03DJOYJ
AAACTCC
>Sample_4 GJVT7LS03DMERH
AAACTCCGCAATGCGCGCAAGCGTGACGGGGGGAC
>Sample_5 GJVT7LS03DN2RB
AAACTCCGCAATGCGCGCAAGCGTGACGG

换句话说，我想为每个匹配模式的行添加count（以“_”开头）（在本例中为“Sample”）。任何sed / awk /等。这个任务的单行？

Answer 1

一种方式：

$ awk '/^>/{$1=$1"_"++i}1' file
>Sample_1 GJVT7LS03DEUKL
AAACTCCGCAATGCGCGCAAGC
>Sample_2 GJVT7LS03CXJ53
AAACTCCGCAATGCGCGCAAGCGTGACGGGG
>Sample_3 GJVT7LS03DJOYJ
AAACTCC
>Sample_4 GJVT7LS03DMERH
AAACTCCGCAATGCGCGCAAGCGTGACGGGGGGAC
>Sample_5 GJVT7LS03DN2RB
AAACTCCGCAATGCGCGCAAGCGTGACGG

Answer 2

一种可能的尝试如下：

$ awk 'BEGIN{a=1}/Sample/ {$1=$1"_"a; a++}1' file
>Sample_1 GJVT7LS03DEUKL
AAACTCCGCAATGCGCGCAAGC
>Sample_2 GJVT7LS03CXJ53
AAACTCCGCAATGCGCGCAAGCGTGACGGGG
>Sample_3 GJVT7LS03DJOYJ
AAACTCC
>Sample_4 GJVT7LS03DMERH
AAACTCCGCAATGCGCGCAAGCGTGACGGGGGGAC
>Sample_5 GJVT7LS03DN2RB
AAACTCCGCAATGCGCGCAAGCGTGACGG

对于包含“Sample”的每个文件，我们使用"_"$variable更新第一个字段。这个变量a最初设置为1，然后我们以1为增量。