Shell.run

Example
shell.run(String programLocation, String sArgs), This function is used to run a program at the desired location with the sArgs as the arguments.
Code	shell.run("myprogram", "test")
Output	Runs the program "myprogram" with arguments "test"

Here is a example how to run programs with custom input.

stringArgs=read() -- You input a line of string, and each space makes a argument, such as "arg1 arg2". Argument 1 is "arg1".
shell.run("myprogram", stringArgs) 
-- runs the program. myprogram would have to be located on the main directory of the computer for this to work.