Shell Programming and Scripting

echo -n "Title:"
read Title  
echo -n "Author:"
read Author

price_check=`awk  -F: '{if ($1=='$Title' && $3=='$Author') print $3 } ' fruit`
echo $price_check

while true
do
echo -n "Title = "
read Title
echo -n "Author = "
read Author
if test nawk -F: '/'$Title'/ &&/'$Author'/' infile.txt &>/dev/null
then
echo $Author
else
echo "Book Does not exist"
fi
done

while true
do
echo -n "Title = "
read Title
echo -n "Author = "
read Author
if grep $Title database.txt | grep $Author  &>/dev/null
then
echo $Author
else
echo "Book Does not exist"
fi
done

while true
do
echo -n "Title = "
read Title
echo -n "Author = "
read Author
nawk -F: '/'$Title'/ &&/'$Author'/' infile.txt &>/dev/null
if [ $? -eq 0 ]
then
echo $Author
else
echo "Book Does not exist"
fi
done

while true
do
echo -n "Title = "
read Title
echo -n "Author = "
read Author
if grep $Title database.txt | grep $Author  &>/dev/null
then
echo $Author
else
echo "Book Does not exist"
fi
done

&>/dev/null

awk -F":" '{print $3}'`