#Vraag 11
cat "genes_CDS.fa" | tr '\n' ' ' | sed 's/ >/\n>/g' | awk '
BEGIN {
  print "Het aantal codons per gen dat codeert voor cysteine:"
}
{
  tel=0
  for (i=1;i<=length($2);i+=3) {
    if (substr($2,i,3) == "TGT" || substr($2,i,3) "TGC") {
      tel++
    }
  }
  print substr($1,2)":",tel
}
'

#Vraag 12
cat "Zebrafish_proteins_single_line.txt" | awk '

{
  tel=0
  for (i=1;i<=length($2);i++) {
    if (substr($2,i,1) == "M") {
      tel++;
    }
  }
  percentage=tel/length($2)*100;
  print substr($1,2)":",tel, "("percentage") %"
}
' | sort -nrk2 | head -5