Unix commandline start: passing arguments to m file

I want to achieve.

1. Start matlab in unix using commandline
2. pass myfunc.m file
3. myfunc.m asks for input from user. square x if input is <1>, cube x if input is <2> or print x if input is <3>
4. myfunc.m asks for second input from user: print result as integer if input <1> or print as whole number if input is <2>
5. lastly, myfunc.m asks for 3rd input from user: plot if input is <plot> or exit without plot if input is <noplot>

step 1 and 2 are executing by running below commandline. How do I achieve steps 3 to 5 ?

     matlab -nosplash -nodisplay -nojvm -nodesktop < myfunc.m

I don't want to modify myfunc.m as it is provided by another user and it typically keeps changing.

Answer 1

[Walter Roberson]

matlab -nosplash -nodisplay -nojvm -nodesktop -r  "try; myfunc; catch ME;end;quit"

[Mustafa Khan Patan]

Thank you.

Instead, is there a way to start matlab, pass all the inputs 1, 1 and plot, and exit matlab with one commandline ?

something like

• matlab -options <myfunc.m> <1,1,plot>

[Steven Lord]

Not if myfunc uses INPUT or something similar to interactively request that information. If it accepts those inputs as input arguments then yes.

 matlab -r "myfunc(1, 1, 'plot'); exit"

[Walter Roberson]

printf "1\n1\nplot\n" | matlab -nosplash -nodisplay -nojvm -nodesktop -r  "try; myfunc; catch ME;end;quit"

[Mustafa Khan Patan]

Thank you.

since I don't want to touch my .m file, converting it to a function is not an option.

Printf did not work. But this seems to be the right way for what I want to achieve.

I tried passing arguments thru process ID as below:

1. Start matlab and pass .m file
2. find process ID
3. Pass arguments to matlab using process ID.

Terminal 1:
  matlab -nosplash -nodisplay -nojvm -nodesktop -r "try;myfunc;end;quit"
Terminal 2: 
pidof MATLAB 
echo "1" > /proc/XXXX/fd/0

This seems to work. Only problem I am having now is passing enterkey / carriage return key using echo command to matlab. How to achieve this?

Note: both echo and printf command seems to work for passing arguments to process ID.

[Walter Roberson]

(echo 1; echo 1; echo plot) | matlab -nosplash -nodisplay -nojvm -nodesktop -r "try;myfunc;end;quit"

or

matlab -nosplash -nodisplay -nojvm -nodesktop -r "try;myfunc;end;quit" <<EOF
1
1
plot
EOF

[Mustafa Khan Patan]

Thank you.

I still am look for how to pass enterkey / carriage return from echo (unix) to matlab process ID.

Or how do you pass enter key in a matlab command window without actually pressing enter key on keyboard ?

[Walter Roberson]

On my system, printf does work:

printf "1\n1\nplot\n" | matlab -nosplash -nodisplay -nojvm -nodesktop -r "input('A'),input('B'),input('C','s')"

http://unix.stackexchange.com/questions/65803/why-is-printf-better-than-echo

The character that needs to be sent is newline (control-J, char(10)). echo cannot always send that in one go. printf can. Multiple echo grouped together in a pipe will emit a newline between each, (echo 1;echo 1; echo plot) | .....