Table 1. Listing of Signals
Name |
Number |
Default |
Description |
|
|
Action |
|
SIGHUP |
1 |
Exit |
Hangup (ref termio(7I)) |
SIGINT |
2 |
Exit |
Interrupt (ref termio(7I)) |
SIGQUIT |
3 |
Core |
Quit (ref termio(7I)) |
SIGILL |
4 |
Core |
Illegal Instruction |
SIGTRAP |
5 |
Core |
Trace or breakpoint trap |
SIGABRT |
6 |
Core |
Abort |
SIGEMT |
7 |
Core |
Emulation trap |
SIGFPE |
8 |
Core |
Arithmetic exception |
SIGKILL |
9 |
Exit |
Kill |
SIGBUS |
10 |
Core |
Bus error--a misaligned |
|
|
|
address error |
SIGSEGV |
11 |
Core |
Segmentation fault, an address |
|
|
|
reference boundary error |
SIGSYS |
12 |
Core |
Bad system call |
SIGPIPE |
13 |
Exit |
Broken pipe |
SIGALRM |
14 |
Exit |
Alarm clock |
SIGTERM |
15 |
Exit |
Terminated |
SIGUSR1 |
16 |
Exit |
User defined signal 1 |
SIGUSR2 |
17 |
Exit |
User defined signal 2 |
SIGCHLD |
18 |
Ignore |
Child process status changed |
SIGPWR |
19 |
Ignore |
Power fail or restart |
SIGWINCH |
20 |
Ignore |
Window size change |
SIGURG |
21 |
Ignore |
Urgent socket condition |
SIGPOLL |
22 |
Exit |
Pollable event (ref streamio(7I)) |
SIGSTOP |
23 |
Stop |
Stop (cannot be caught |
|
|
|
or ignored) |
SIGTSTP |
24 |
Stop |
Stop (job control, e.g., CTRL-z)) |
SIGCONT |
25 |
Ignore |
Continued |
SIGTTIN |
26 |
Stop |
Stopped--tty input |
|
|
|
(ref termio(7I)) |
SIGTTOU |
27 |
Stop |
Stopped--tty output |
|
|
|
(ref termio(7I)) |
SIGVTALRM |
28 |
Exit |
Virtual timer expired |
SIGPROF |
29 |
Exit |
Profiling timer expired |
SIGXCPU |
30 |
Core |
CPU time limit exceeded |
|
|
|
(ref getrlimit(2)) |
SIGXFSZ |
31 |
Core |
File size limit exceeded |
|
|
|
(ref getrlimit(2)) |
SIGWAITING |
32 |
Ignore |
Concurrency signal used |
|
|
|
by threads library |
SIGLWP |
33 |
Ignore |
Inter-LWP signal used by |
|
|
|
threads library |
SIGFREEZE |
34 |
Ignore |
Checkpoint suspend |
SIGTHAW |
35 |
Ignore |
Checkpoint resume |
SIGCANCEL |
36 |
Ignore |
Cancellation signal used |
|
|
|
by threads library |
SIGLOST |
37 |
Ignore |
Resource lost |
SIGRTMIN |
38 |
Exit |
Highest priority real-time signal |
SIGRTMAX |
45 |
Exit |
Lowest priority real-time signal |