How to process a file line by line in ksh?

Question

How can you process a file line by line in ksh?

Answer 1

somthing like:

while read LINEVAR ; do echo ${LINEVAR} ; done < myfile.txt

which will read one line of input from myfile.txt at a time?

Answer 2

Check bellow link, I have posted 5 different methods with timing comparison.

Different ways to process a file line by line in a shell script