| FreeMat
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Section: Operating System Functions
The system function allows you to call an external program from within FreeMat, and capture the output. The syntax of the system function is 
y = system(cmd)
 where cmd is the command to execute. The return array y is of type cell-array, where each entry in the array corresponds to a line from the output. 
Here is an example of calling the ls function (the list files function under Un*x-like operating system).
--> y = system('ls a*.m')
y = 
 [addtest2.m] [addtest3.m] [addtest.m] 
--> y{1}
ans = 
addtest2.m