Which of the following commands kills the process with the PID 123 but allows the process to "clean up" before exiting?
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A. B. C. D.D
The command that kills the process with the PID 123 but allows the process to "clean up" before exiting is the kill command with the -TERM option.
The answer is D. kill -TERM 123.
Here is an explanation of each option:
A. kill -PIPE 123: This option sends the SIGPIPE signal to the process with PID 123. The SIGPIPE signal is used to inform a process that it has attempted to write to a pipe that has been closed.
B. kill -KILL 123: This option sends the SIGKILL signal to the process with PID 123. The SIGKILL signal immediately terminates the process without allowing it to perform any cleanup.
C. kill -STOP 123: This option sends the SIGSTOP signal to the process with PID 123. The SIGSTOP signal suspends the process but does not terminate it.
D. kill -TERM 123: This option sends the SIGTERM signal to the process with PID 123. The SIGTERM signal is a graceful way to terminate a process as it allows the process to perform any cleanup actions it needs before exiting.
Therefore, option D is the correct answer as it kills the process with PID 123 but allows it to clean up before exiting.