Matlab Running an m-file from command-line

Question

Suppose that   I have an m-file at location  C  M1 M2 M3 mfile m  And exe file of the matlab is at this location  C  E1 E2 E3 matlab exe  I want to run this m-file with Matlab  from command-line  for example inside a  bat file  How can I do this  is there a way to do it

User · Answer

On Linux you can do the same and you can actually send back to the shell a custom error code, like the following:

#!/bin/bash
matlab -nodisplay -nojvm -nosplash -nodesktop -r \ 
      "try, run('/foo/bar/my_script.m'), catch, exit(1), end, exit(0);"
echo "matlab exit code: $?"

it prints matlab exit code: 1 if the script throws an exception, matlab exit code: 0 otherwise.

User · Answer

Here are the steps    Start the command line  Enter the folder containing the  m file with cd C  M1 M2 M3 Run the following  C  E1 E2 E3 matlab exe -r mfile   Windows systems will use your current folder as the location for MATLAB to search for  m files  and the -r option tries to start the given  m file as soon as startup occurs

User · Answer

I think that one important point that was not mentioned in the previous answers is that  if not explicitly indicated  the matlab interpreter will remain open  Therefore  to the answer of  hkBattousai I will add the exit command    C   lt a long path here gt  matlab exe  -nodisplay -nosplash -nodesktop -r  run  C   lt a long path here gt  mfile m   exit

User · Answer

A command like this runs the m-file successfully   quot C   lt a long path here gt  matlab exe quot  -nodisplay -nosplash -nodesktop -r  quot run  C   lt a long path here gt  mfile m    exit  quot

User · Answer

cat 1 m   matlab -nodesktop -nosplash   And I use Ubuntu

User · Answer

Thanks to malat  Your comment helped me   But I want to add my try-catch block  as I found the MExeption method getReport   that returns the whole error message and prints it to the matlab console   Additionally I printed the filename as this compilation is part of a batch script that calls matlab   try     some code         catch message     display   ERROR in file    message stack file       display   ERROR    getReport message    end    For a false model name passed to legacy code generation method  the output would look like   ERROR in file  C           ERROR  Undefined function or variable  modelname    Error in sub-m-file  line 63  legacy code   slblock generate   specs  modelname    Error in m-file  line 11  sub-m-file  Error in run  line 63  evalin  caller    script          Finally  to display the output at the windows command prompt window  just log the matlab console to a file with -logfile logfile txt  use additionally -wait  and call the batch command type logfile txt

User · Answer

Since R2019b  there is a new command line option  -batch  It replaces -r  which is no longer recommended  It also unifies the syntax across platforms  See for example the documentation for Windows  for the other platforms the description is identical   matlab -batch  statement to run    This starts MATLAB without the desktop or splash screen  logs all output to stdout and stderr  exits automatically when the statement completes  and provides an exit code reporting success or error   It is thus no longer necessary to use try catch around the code to run  and it is no longer necessary to add an exit statement

User · Answer

Here is what I would use instead  to gracefully handle errors from the script    C   lt a long path here gt  matlab exe  -nodisplay -nosplash -nodesktop -r  try  run  C   lt a long path here gt  mfile m    catch  exit  end  exit    If you want more verbosity    C   lt a long path here gt  matlab exe  -nodisplay -nosplash -nodesktop -r  try  run  C   lt a long path here gt  mfile m    catch me  fprintf   s    s n  me identifier me message   end  exit    I found the original reference here  Since original link is now gone  here is the link to an alternate newreader still alive today    exit matlab when running batch m file

User · Answer

I run this command within a bash script  in particular to submit SGE jobs and batch process things    Path to matlab -nodisplay -nosplash -nodesktop  lt  m file m

User · Answer

Since none of the answers has information about feeding input argument  it is important to  add it here  After some research  I found this link  Feeding the arguments is very similar to how we run a Matlab function    matlab -r  try myfunction argument1 argument2   catch  end  quit    If you are somehow getting an argument from bash terminal  you simply need to insert that into the bash command as    matlab -r  try myfunction  MY BASH ARG argument2   catch  end  quit     This is after a couple of trial and error

[matlab] Matlab: Running an m-file from command-line

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