Kernel

The kernel

The kernel is responsible for everything; it starts, stops, and kills the processes and is also in charge of switching tasks. It can also spread the load over multiple CPS's. Along with the kernel doing all of this, the kernel also chooses how much RAM, CPU, and storage the application gets to use.

Local and Environment Variables

A local variable can only access the shell in which it is created; however, environment variables are available to the shell.