I am trying to read lines from a file containing multiple lines. I want to identify lines that contain only spaces. By definition, an empty line is empty and does not contain anything (including spaces). I want to detect lines that seems to be empty but they are not (lines that contain spaces only)
while read line; do
if [[ `echo "$line" | wc -w` == 0 && `echo "$line" | wc -c` > 1 ]];
then
echo "Fake empty line detected"
fi
done < "$1"
But because read ignores spaces in the start and in the end of a string my code isn't working.
an example of a file
hi
hi
(empty line, no spaces or any other char)
hi
(two spaces)
hey
Please help me to fix the code