Twelve Methods to Parse a File Line by Line — Part 4

Source :  Mastering Unix Shell Scripting 

Here we are continues the magic. You can find all parts here ….
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 10: 
exec 3<&0
exec 0< $FILENAME
while line LINE
do
echo "$LINE"
:
done
exec 0<&3

Method 11: 
exec 3<&0
exec 0< $FILENAME
while LINE=$(line)
do
print "$LINE"
:
done
exec 0<&3

Method 12: 
exec 3<&0
exec 0< $FILENAME
while line LINE
do
echo "$LINE"
:
done
exec 0<&3

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