UNIX for Dummies Questions & Answers

The above will replace only the 1st occurence of 1st line... she wants it for second line also... so use

Code:

$ cat file3
xxx xxx1 N N N 0
yyy yyy1 N N N 0
 
$ sed '1,2s/N/Y/1' file3
xxx xxx1 Y N N 0
yyy yyy1 Y N N 0

Hi All,

i have two functions in my script.

question()
{
num=`ps -e | grep ps | awk -F" " '{print $1}'`
qno=`expr $num % 10`
grade=grade1
cat grade1/$qno
answer ${grade} ${qno}
}
answer()
{
grade=$1
qno=$2
ansno=`wc -l $grade/ans/$qno | cut -d' ' -f1`
j=0
while [ $j -lt $ansno ]
do
echo select your answer
read ans[$j]

echo "do you want to select one more answer?"
read ch
if [ $ch != y ]
then
break;
fi
j=`expr $j + 1`
done
k=0
exec < $grade/ans/$qno
while read line
do
echo line=$line
while [ $k -lt $ansno ]
do
if [ ${ans[$k]} = $line ]
then
echo "equal"
else
echo "not equal"
fi
k=`expr $k + 1`
done
done
}
i am calling question function 3 times in a loop. for the 1st times it works fine, 2nd and 3rd time this will not take input for ans[$j]
can you please help?
thanks