How to find the average sequence length for annotated amino acid sequence files?

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Joseph Adelskov

Many NGS quality analysis tools will do this, the PRINSEQ web service is probably the easiest way using a .faa file.

https://edwards.sdsu.edu/cgi-bin/prinseq/prinseq.cgi

Upload your .faa file and run just basic statistics and you'll get some numeric stats and graphical distributions.

Ajit kumar Roy

Agree with Joseph

Shabhonam Caim

in linux you can simply do:

awk '{/>/&&++a||b+=length()}END{print b/a}' file.fa

Cheers