Могет так?
a=$(ls -l | tail -n +2)
while read line
do
b=$(echo "$line" | awk '{print $1}' | sed -e 's/r/read/g' | sed -e 's/x/execute/g' | sed -e 's/w/write/g' )
c=$(echo "$line" | awk '{for (i=2; i<=NF; i++) print $i}')
echo $b $c >> ls.txt
done <<< "$a"
