Twelve Methods to Parse a File Line by Line — Part 3

Source :  Mastering Unix Shell Scripting  

In this series we learn 12 methods to parse the file in Linux/Unix.
TwelveMethods to Parse a File Line by Line — Part 1
TwelveMethods to Parse a File Line by Line — Part 2
TwelveMethods to Parse a File Line by Line — Part 3
TwelveMethods to Parse a File Line by Line — Part 4

Method 7: 
cat $FILENAME | while LINE=$(line)
do
echo "$LINE"
done

Method 8: 
while LINE=$(line)
do
echo "$LINE"
done < $FILENAME

Method 9: 
exec 3<&0
exec 0< $FILENAME
while read LINE
do
echo "$LINE"
:
done
exec 0<&3

njoy the simplicity.......
Atul Singh