Bash readlines how to

Method 1

for read -r line 
do
	echo $line	
done < input_file.txt > out_file.txt

Method 1

file=$(cat input_file.txt)

for line in  $file
do
	echo $line	
done < input_file.txt > out_file.txt

Links

https://www.geeksforgeeks.org/bash-scripting-how-to-read-a-file-line-by-line/