How to run matlab from the command line and print to the command line?

Question

I want to run a script on windows dos terminal where the script will display "Hello world" to the terminal I executed this from e.g.

matlab.exe -nosplash -nodesktop -nojvm -wait -r printToCommandLine.m

Where printToCommandLine.m contains:

system(sprintf('echo Hello world'));

but it only prints to the matlab command window that gets generated when executing the script

I don't think this behavior is supported on Windows. See here. — AnonSubmitter85
– AnonSubmitter85, Commented Mar 9, 2018 at 5:56
Hmm.. is there any way to notify the command line of anything? I basically have a very long Matlab script and I want to display when a certain process is finished e.g. "Process A is complete..." — kkawabat
– kkawabat, Commented Mar 9, 2018 at 6:29
Alternative 1: install Linux. Alternative 2: use Octave. Sorry I don't have any better news for you. — Cris Luengo
– Cris Luengo, Commented Mar 9, 2018 at 6:52
@kkawabat Wrap the call to Matlab in its own executable that prints a string when it's finished? — AnonSubmitter85
– AnonSubmitter85, Commented Mar 9, 2018 at 7:36
@AnonSubmitter85 I want to print a string in the middle of the Matlab file since it's one script but has multiple parts within the script. I can separate the processes into different scripts and wrap those in but that would be difficult for my case. — kkawabat
– kkawabat, Commented Mar 9, 2018 at 8:08

Bibonaut · Accepted Answer · 2018-03-23 11:54:38Z

First, I am not shure, if the syntax has changed, but I have to call the script without the file extension '.m':

matlab.exe -nosplash -nodesktop -nojvm -wait -r printToCommandLine

Otherwise I will get an error within MATLAB.

Second, this is just a work around, but you can print your current command line output to a log file e.g. 'log.txt' using

matlab.exe -nosplash -nodesktop -nojvm -wait -logfile "log.txt" -r printToCommandLine

The log file will be updated at runtime. To test this, I created a small example script and had a look how 'log.txt' changes during execution:

disp('Script execution started. Waiting 10 seconds...')
pause(10)
disp('...waited 10 seconds.');

This is not exactly what you wanted but it gives you the chance to get actual information about the current command line output during your execution (in a text file).

We use this for automated (remote) testing to print our MATLAB command line output to the console after the tests pass with

type log.txt

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