FASTA：删除长度为n的序列后 [英] fasta: delete sequences after n length

问题描述

我有在不同长度的每个文件seqs的1000多个FASTA文件。我想只保留第200（N）基地从每个序列。我怎样才能做到这一点在Perl？

I have multiple fasta files with 1000s of seqs in each file of varying length. I would like to keep only the first 200 (n) bases from each sequence. How can I do this in Perl?

推荐答案

很难准确地理解你的意思，没有看到一个例子，但如果你只需要每行前200个字符只使用剪切：

Difficult to understand exactly what you mean without seeing an example but if you only need the first 200 characters per line just use cut:

cut -c1-200 file

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