read from a file

To read from stdin we use
read line
how do i read the contents of a file(passed as an argument to script) line by line....

ok got it!!!
cat linenos | while read line
do
echo $line
done

linenos is the filename!!

create the input file as c.txt

ur script file will be
#!/bin/bash
clear
cat $1 | while read line
do
echo $line
done

and exec it as: sh <filename>.sh c.txt

I think this is what u asked for..

n=`wc -l < $1`
i=1
while [ "$i" -le "$n" ]
do
line=`cat $1 | head -$i | tail -1`
echo $line
i=`expr $i + 1`
done

This is a small script which reads line by line and prints it.

even this work:
while read line
do
echo $line
done < $1

where $1 is the name of the file to be read

@ akalya ! ya it does. I posted my message before seeing that !