MATLAB: How to sort all the columns of a file into a single column

Question

I have a data file having several columns of values. I want to sort all the columns of the file into one column. For example let us assume the data has only two columns like

 1    5
 2    6
 3    7
 4    8

I want to sort this data like

 1
 2
 3
 4
 5
 6
 7
 8

This is just an example with two columns. My original data has several columns. In that case how can I sort all the columns into a single column?

Answer 1

Try

reshape(A,numel(A),1)