signal

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NAME

       signal - list of available signals


DESCRIPTION

       Linux supports the following signals:

                   |       |        |
       Signal name | Value | Action | Comment
       ------------+-------+--------+-----------------------------------
       SIGHUP      |     1 | A      | Hangup detected
       SIGINT      |     2 | A      | Interrupt from keyboard
       SIGQUIT     |     3 | A      | Quit from keyboard
       SIGILL      |     4 | A      | Illegal Instruction
       SIGTRAP     |     5 | CG     | Trace/breakpoint trap
       SIGABRT     |     6 | C      | Abort
       SIGUNUSED   |     7 | AG     | Unused signal
       SIGFPE      |     8 | C      | Floating point exception
       SIGKILL     |     9 | AEF    | Termination signal
       SIGUSR1     |    10 | A      | User-defined signal 1
       SIGSEGV     |    11 | C      | Invalid memory reference
       SIGUSR2     |    12 | A      | User-defined signal 2
       SIGPIPE     |    13 | A      | Write to pipe with no readers
       SIGALRM     |    14 | A      | Timer signal from alarm(1).
       SIGTERM     |    15 | A      | Termination signal
       SIGSTKFLT   |    16 | AG     | Stack fault on coprocessor
       SIGCHLD     |    17 | B      | Child terminated
       SIGCONT     |    18 |        | Continue if stopped
       SIGTSTOP    |    19 | DEF    | Stop process
       SIGTSTP     |    20 | D      | Stop typed at tty
       SIGTTIN     |    21 | D      | tty input for background process
       SIGTTOU     |    22 | D      | tty output for background process
       SIGIO       |    23 | AG     | I/O error
       SIGXCPU     |    24 | AG     | CPU time limit exceeded
       SIGXFSZ     |    25 | AG     | File size limit exceeded
       SIGVTALRM   |    26 | AG     | Virtual time alarm (???)
       SIGPROF     |    27 | AG     | Profile signal
       SIGWINCH    |    29 | BG     | Window resize signal

       The  letters  in  the  "Action"  column have the following
       meanings:

       A      Default action is to terminate the process.

       B      Default action is to ignore the signal.

       C      Default action is to dump core.

       D      Default action is to stop the process.

       E      Signal cannot be caught.

       F      Signal cannot be ignored.

       G      Not a POSIX.1 conformant signal.


CONFORMS TO

       POSIX.1


BUGS

       A SIGBUS is missing; this is because the 386 hardware does
       not  generate  such a signal, but makes porting from other
       architectures unnecessarily difficult.
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