Remove line breaks in a FASTA file

Question

I have a fasta file where the sequences are broken up with newlines. I\'d like to remove the newlines. Here\'s an example of my file:

>accession1
ATGGCC         


        

Answer 1

Another variation :-)

awk '!/>/{printf( "%s", $0);next}
     NR>1{printf( "\n")} 
     END {printf"\n"}
     7' YourFile