Unix - Variable en ciclo FOR

count=0

for x in `ls -lrt | awk '$8 == "2014"' | awk '{print $9}'`;

do count=`expr $count + 1`;

done

echo "Cantidad de Archivos 2014: $count";

one=2014

count=0

for x in `ls -lrt  |awk '$8 == $one'  |awk '{print $9}'`;

do count=`expr $count + 1`;

done

echo "Cantidad de Archivos 2014: $count";

for x in `ls -lrt | awk '{a='$one';b='$two'}' '$8 == $a'  |awk '{print $9}'`;

one=2014

count=0

for x in `ls -lrt  | awk -v one=$one '$8 == $one'  | awk '{print $9}'`;

do count=`expr $count + 1`;

done

echo "Cantidad de Archivos 2014: $count";

one=2016

count=0

for x in `ls -lrt | nawk -v one=$one '$8 == one {print $9}' `;

do

   count=`expr $count + 1`;

done

echo "Cantidad de Archivos $one: $count";