Where exactly are you stuck?

Did you manage to open the file

Can you print the contents of the file from your script

Assuming that you can, all you need is: 

if( $line =~ />contig_(\d+)\s/ ) { print ">$1\n"; } else { print "$lin
+e\n"; }

[download]

In reply to Re: file header change by tmharish
in thread file header change by utpalmtbi

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