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

If the data is in file.txt, then:

echo $(

The '$(' reads the file and gives the contents as a series of words which 'echo' then echoes with a space between them. The 'tr' command then deletes any spaces:

22791;14336;22821;34653;21491;25522;33238;