signal
Hurricane Electric Internet Services
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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Copyright (C) 1998
Hurricane Electric.
All Rights Reserved.