How to redirect Matlab output of a command to a file? [duplicate]

Question

This question already has an answer here:

• Print A Matlab Struct to a Text File 3 answers

I want to redirect or copy the output of a Matlab command to a file. How can I do that?

In my case, I have two large structs that I want to compare using the UNIX tool diff.

Example: I can do this in Matlab:

>> s1

s1 = 

      a: 32
    abc: 'example'

>> 

and want a file containing approx:

s1 = 

      a: 32
    abc: 'example'

These solutions are not viable:

• Copy-pase: can't automate (comfortably).
• save -ascii: does not work with structs.

Answer 1

Have a look at the diary function. E.g.

diary my_file.txt
s1
diary off

The file my_file.txt will then contain exactly what you see on screen.

Answer 2

If you need to do it more fine grained there is the evalc function that will store the output to a string.

Later you can output the string into any output channel matlab offers.