Edit or replace certain character in fasta header from a large fasta sequence file
1 answer
You put this in Python or R. Most likely though using sed would be among the fastest. The find and replace syntax is spelled out here.
sed -i -e 's/abc/XYZ/g' file.txt
Though recently I saw a recommendation for sd for the find and replace aspect. (sed can do more than just that.) I haven't checked out sd myself yet. It has examples there.
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