file of CDSs

Question

[Oliver]

what this command do for file of CDSs

sed -re 's/(^[^_]+)_.+/\1/gi' your_CDS.fasta > your_CDS.renamed.fasta

Answer 1

[Haci]

The file your_CDS.fasta is being manipulated by sed, which makes use of regular expressions to do so in this case. Just go to a regex tester, for example https://regex101.com and paste (^[^_]+)_.+ in the "REGULAR EXPRESSION" box for a detailed expression of what each part of the regex does.