Match empty lines in a file with 'grep'

grep and count empty lines like this:

grep -c "^$" myfile.txt

As \n is considered end of line you need to use line start and line end "^$"

The regular expression to match the end of the line is $, not \n (since grep works a line at a time, it ignores the newlines between lines).

grep -c '^$' myfile.txt