The last command executed in the function or script determines the exit status. Within a script, an. command may be used to deliver an nnn exit status to the shell (nnn must be an integer in the 0 - 255 range). When a script ends with an exit that has no parameter, the exit status of the script is the exit status of the last command executed in the script (previous to the exit).
Quick Answer. A beef roast is cooked in a 375 degrees Fahrenheit oven for 20 minutes per pound. The exact cooking time depends on the size of the roast. The roast is done when it reaches between 135 and 150 degrees Fahrenheit on a meat thermometer.
1 Do not cover or add water. 2  Place the roast in the preheated oven. 3  Reduce the temperature to 475 degrees F (245 degrees C). 4  Roast for 21 minutes (seven minutes per pound) then turn off the oven and let the roast sit in the hot oven for 2 1/2 hours. Roast for 21 minutes (seven minutes per pound) then turn off the oven and let the roast sit in the hot oven for 2 1/2 hours. 2  Do not open the door at all during this time! 3  Remove the roast from the oven, the internal temperature should have reached at least 145 degrees F (65 degrees C).