本文深入探讨了信号处理在计算机科学中的应用，包括SIGHUP到SIGSYS等信号的含义，以及它们如何触发特定的操作。
Symbol Number Action Meaning
SIGHUP 1 exit Hangs up.
SIGINT 2 exit Interrupts.
SIGQUIT 3 core dump Quits.
SIGILL 4 core dump Illegal instruction.
SIGTRAP 5 core dump Trace trap.
SIGIOT 6 core dump IOT instruction.
SIGEMT 7 core dump MT instruction.
SIGFPE 8 core dump Floating point exception.
SIGKILL 9 exit Kills (cannot be caught or ignored).
SIGBUS 10 core dump Bus error.
SIGSEGV 11 core dump Segmentation violation.
SIGSYS 12 core dump Bad argument to system call.
SIGPIPE 13 exit Writes on a pipe with no one to read it.
SIGALRM 14 exit Alarm clock.
SIGTERM 15 exit Software termination signal.
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