Count the length of genome strings in the fastas directory

script.sh

#!/bin/bash

# the_fastas=`ls fastas | sort --reverse`
the_fastas=`ls fastas`
total=0
for file in $the_fastas; do
  size=`cat "fastas/$file" | grep -v '>' | tr -d "\n" | wc -c`
  echo "The file is $file with a size of $size"
  total=$((total+size))
done
echo "The total length is $total"