References:
	Linux asm-i386/signal.h;
	SUSv2;
	signal(7) Linux Programmer's Manual (April 14, 1996)


Default Action Abbreviations:

Terminate
	Abnormal termination of the process. The process is terminated
	with all the consequences of _exit() except that the status
	made available to wait() and waitpid() indicates abnormal
	termination by the specified signal.

Ignore
	Ignore the signal.

Dump core
	Abnormal termination of the process. Additionally,
	implementation-dependent abnormal termination actions, such as
	creation of a core file, may occur.

Stop
	Stop the process.

Continue
	Continue the process, if it is stopped;
	otherwise ignore the signal.

c
	Signal cannot be caught.

i
	Signal cannot be ignored.


Std Abbreviations:

P	POSIX.1
U	SUSv2



Signal   Default  Std  Description
         Action
-------------------------------------------

SIGABRT     D      P   Process abort signal.
SIGALRM     T      P   Timer signal from alarm(2).
SIGBUS      D      U   Bus error. Access to an undefined portion of a memory
                       object.
SIGCHLD     I      P   Child process terminated or stopped.
SIGCONT     C      P   Continue executing, if stopped.
SIGEMT
SIGFPE      D      P   Erroneous arithmetic operation
                       (Floating point exception).
SIGHUP      T      P   Hangup detected on controlling terminal
                       or death of controlling process.
SIGILL      D      P   Illegal Instruction.
SIGINFO                A synonym for SIGPWR.
SIGINT      T      P   Terminal interrupt signal (Interrupt from keyboard).
SIGIO       T          I/O now possible.
SIGIOT      D          IOT trap. A synonym for SIGABRT.
SIGKILL     Tci    P   Kill signal.
SIGLOST     T          File lock lost.
SIGPIPE     T      P   Broken pipe: write to pipe with no readers.
SIGPOLL     T      U   Pollable event (Sys V). Synonym of SIGIO.
SIGPROF     T      U   Profiling timer expired.
SIGPWR      T          Power failure (System V).
SIGQUIT     D      P   Terminal quit signal (Quit from keyboard).
SIGSEGV     D      P   Invalid memory reference.
SIGSTKFLT   T          Stack fault on coprocessor.
SIGSTOP     Sci    P   Stop executing process.
SIGSYS      D      U   Bad system call (SVID:Bad argument to routine).
SIGTERM     T      P   Termination signal.
SIGTRAP     D      U   Trace/breakpoint trap.
SIGTSTP     S      P   Terminal stop signal (Stop typed at tty).
SIGTTIN     S      P   Background process attempting read.
SIGTTOU     S      P   Background process attempting write.
SIGURG      I      U   High bandwidth data is available at a socket.
SIGUSR1     T      P   User-defined signal 1.
SIGUSR2     T      P   User-defined signal 2.
SIGVTALRM   T      U   Virtual timer expired.
SIGWINCH    I          Window resize signal.
SIGXCPU     D      U   CPU time limit exceeded.
SIGXFSZ     D      U   File size limit exceeded.

