Closed:Extract only FASTA headers (+order) from FASTA file

Question

[joelepaul]

Hi @ll!

Funannotate has renamed my contigs and I the resulting GFF file only mentions the renamed contigs. Now, I would like to replace them with their original names - but for that purpose, I would need a way to extract the FASTA file headers in the original order from the reference genome FASTA file that I gave to funannotate. Might you know of a way how to do so?

Thank you for your help!

Joe