Error running matlab from linux command line

I am running matlab on a remote server. Its far away and I do not want to run XORG. I run my start up no issues:

matlab -nosplash -nodisplay -nodesktop < linux_startup_robot.m

But when I run my main file to begin recording data like this:

matlab -nosplash -nodisplay -nodesktop < main.m

I get this error:

>>  function main()
 |
Error: Function definitions are not permitted in this context.

I know that this code works, when I run on a local machine its not an issue and everything runs as expected.

Please help.

Answer 1

[Ashley]

Thanks for getting back to me.

So this didn't work for me because it kind of opens matlab from the terminal. Then I struggle to get out and run the rest of my scripts that need the initialization script before that.

How I solved it was buy writing a m file that just called main so:

main_called.m literally just has:

main

Answer 2

[Steven Lord]

Don't pipe your function into MATLAB. Use the -r startup option instead.

 matlab -nosplash -nodisplay -nodesktop -r why

If you want to execute multiple commands, wrap them in quotes.

 matlab -nosplash -nodisplay -nodesktop -r "for k = 1:10, why, end"
 matlab -nosplash -nodisplay -nodesktop -r "why, quit"
 matlab -nosplash -nodisplay -nodesktop -r "rng('shuffle'), why, quit"

The reason piping worked for your first example is because your linux_startup_robot.m is a script file, not a function file. But -r will work to run scripts or functions, instantiate classes, or execute arbitrary code as above.