Important code and algorithms

Running programs:

shell.run("a", arg1, arg2):  runs program named a with two arguments. (Display_1.1)

programs["func"](): runs function with name func in the table programs. currently input arguements doesn't work (Display_1.1)

a = assert(loadfile("func"))(): saves the return value of program runc in variable a. input arguments not tested. source:
http://www.computercraft.info/forums2/index.php?/topic/2153-luaquestion-how-can-i-get-the-return-statements-value-from-another-program/