How to fix “No newline at end of file” warning for lots of files?

Question

I have a huge number of source files that are all lacking a newline at the end.

How do I automatically add a newline to the end of each of them?

Some may alr

Answer 1

Try ex-way:

ex -s +"bufdo wq" *.c

And recursively (with a new globbing option enabled):

ex -s +"bufdo wq" **/*.c

This is equivalent to vi -es. Change *.c to extension of your interest.

The ex/vi would automatically append newline on save if it's not present.