The exit command terminates a script, just as in a C program. It can also return a value, which is available to the script's parent process. Every command returns an exit status (sometimes referred to as a return status or exit code). A successful command returns a 0, while an unsuccessful one returns a non-zero value that usually can be interpreted as an error code.
How to Cook Pork Ribs Using the Low and Slow Method. Start the charcoal 30 minutes prior to cooking. Prepare the grill for indirect grilling. Youâre aiming for a temperature of 225 to 250-degrees F. Place ribs bone side down on the grill grate or use a rib rack if youâre cooking several racks of ribs. If using a rib rack, place the meat side of the ribs facing the fire. Add the smoking chips and cover the grill. On average, baby back ribs will take about 4 hours while spare ribs need about 5. At the outset, your main goal is to watch and adjust the temperature. The heat will have a tendency to climb up to the 300-degree F range rather quickly.
1 Slide rack with ribs into upper-middle position and place foil lined pan on lower oven rack, making sure that foil covers rack. 2  Bake/roast ribs until fork-tender, 2-3 hours for spareribs and 1 1/2 hours-2 hours for baby back ribs. Mix a dry rub of the sugar, paprika, pepper, garlic powder and 1 1/2 teaspoons salt in a small bowl. 2  Mix mustard and liquid smoke in another bowl. 3  Lay ribs directly on removed oven rack and lightly sprinkle with salt. 4  Brush both sides of slab with mustard mix and then sprinkle both sides with dry rub.