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This section lists the names for various standard kinds of signals and describes what kind of event they mean. Each signal name is a macro which stands for a positive integer--the signal number for that kind of signal. Your programs should never make assumptions about the numeric code for a particular kind of signal, but rather refer to them always by the names defined here. This is because the number for a given kind of signal can vary from system to system, but the meanings of the names are standardized and fairly uniform.
The signal names are defined in the header file `signal.h'.
NSIGis also one greater than the largest defined signal number.
24.2.1 Program Error Signals Used to report serious program errors. 24.2.2 Termination Signals Used to interrupt and/or terminate the program. 24.2.3 Alarm Signals Used to indicate expiration of timers. 24.2.4 Asynchronous I/O Signals Used to indicate input is available. 24.2.5 Job Control Signals Signals used to support job control. 24.2.6 Operation Error Signals Used to report operational system errors. 24.2.7 Miscellaneous Signals 24.2.8 Signal Messages Printing a message describing a signal.
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