Question

I have a command which outputs in this format:

A
B
C
D
E
F
G
I
J

etc
I want the output to be in this format

A B C D E F G I J

I tried using ./script | tr "\n" " " but all it does is remove n from the output
How do I get all the output in one line.

Edit: I accidentally put in grep while asking the question. I removed
it. My original question still stands.

Answer 1

The grep is superfluous.

This should work:

./script | tr '\n' ' '

It did for me with a command al that lists its arguments one per line:

$ al A B C D E F G H I J
A
B
C
D
E
F
G
H
I
J
$ al A B C D E F G H I J | tr '\n' ' '
A B C D E F G H I J $