week6.1

1. Write a shell script like a more command. It asks for the file
name on the command prompt and displays only 15 lines of the file at a time on the screen. Further, the next 15 lines will be displayed only when the user presses the enter key / any other key.

counter=1
echo -n "Enter a file name : "
read file
 
if  [ ! -f $file ]
then
	echo "$file not a file!"
	exit 1
fi
 
# read file line by line
exec 3<&0
while read line
do
       # pause at line no. 15
	if [ $counter -eq 15 ]
	then
		counter=0 # reset counter
		echo " *** Press [Enter] key to continue ..."
		read -u 3 enterKey
	fi
	echo $line
	(( counter++ ))
done < $file