Getting a text file rid of all superfluous blank lines

[Paul Smith]

On 12/2/05, Mike McCarty <mike.mccarty at sbcglobal.net> wrote:
> I sent you the source. Extract it to a file named noblank.c
> I suspect you have already done that.
> Ok, now build the program...
>
> $ gcc -o noblank noblank.c
>
> After this runs (takes no more than 10 seconds), you will
> have a program named "noblank" in the current directory.
> Either move it to a place in your path, or use ./noblank
> to run it. The usage is:
>
> $ noblank < input_file > output_file

I kindly thank you, Mike, for your program. I have tried that, but when I run

$./noblank file1.txt file2.txt

the program does not terminate, as if waiting for something.

Paul