How do I remove newlines from a text file?

Question

I have the following data, and I need to put it all into one line.

I have this:

22791

;

14336

;

22821

;

34653

;

21491

;

25522

;

33238

;


        

Answer 1

perl -p -i -e 's/\R//g;' filename

Must do the job.