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Re-naming some sequences header within the fasta file

Dear all,

I got a large fasta file with two types of header, the header name for some sequences is contig and for some of them is cx_gx_ix. I want to rename all headers named contig to another name say c_g_i. Please help me how I should do it?

assembly sequence
• 2,649 views • link
updated by Ram Ram • written by seta seta

Thanks friend

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updated by Ram Ram • written by seta seta 
sed 's/>.*/>c_g_i/g' filename.fasta
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updated by Ram Ram • written by Prakki Rama Prakki Rama

Try this

sed -i 's/^>contig/>c_g_i/g' file.fasta
• 1 views • link
updated by Ram Ram • written by cvu cvu

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