The above approaches are probably more robust, but here's a quick & dirty alternative: 
# DOS quoting:
perl -ne "$contig=$1 if /^Sequence:\s+(\S+)/; print \"$contig $_\" if 
+$_!~/^(\S+:)/ && /\S/" dat.txt
# *nix quoting:
perl -ne '$contig=$1 if /^Sequence:\s+(\S+)/; print "$contig $_" if $_
+!~/^(\S+:)/ && /\S/' dat.txt

[download]
Either just redirect the output to a file (or pipe it elsewhere), or you could use the -i argument (man perlrun) as well.

In reply to Re: Perl Parser, need help by davidrw
in thread Perl Parser, need help by joomanji

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