HUP |
1 |
hangup |
INT |
2 |
interrupt (rubout) |
QUIT |
3 |
quit (ASCII FS) |
ILL |
4 |
illegal instruction (not reset when caught) |
TRAP |
5 |
trace trap (not reset when caught) |
IOT |
6 |
IOT instruction |
ABRT |
6 |
used by abort, replace SIGIOT in the future |
EMT |
7 |
EMT instruction |
FPE |
8 |
floating point exception |
KILL |
9 |
kill (cannot be caught or ignored) |
BUS |
10 |
bus error |
SEGV |
11 |
segmentation violation |
SYS |
12 |
bad argument to system call |
PIPE |
13 |
write on a pipe with no one to read it |
ALRM |
14 |
alarm clock |
TERM |
15 |
software termination signal from kill |
USR1 |
16 |
user defined signal 1 |
USR2 |
17 |
user defined signal 2 |
CLD |
18 |
child status change |
CHLD |
18 |
child status change alias (POSIX) |
PWR |
19 |
power-fail restart |
WINCH |
20 |
window size change |
URG |
21 |
urgent socket condition |
POLL |
22 |
pollable event occurred |
IO SIGPOLL |
 |
socket I/O possible (SIGPOLL alias) |
STOP |
23 |
stop (cannot be caught or ignored) |
TSTP |
24 |
user stop requested from tty |
CONT |
25 |
stopped process has been continued |
TTIN |
26 |
background tty read attempted |
TTOU |
27 |
background tty write attempted |
VTALRM |
28 |
virtual timer expired |
PROF |
29 |
profiling timer expired |
XCPU |
30 |
exceeded cpu limit |
XFSZ |
31 |
exceeded file size limit |
WAITING |
32 |
process's lwps are blocked |
LWP |
33 |
special signal used by thread library |
FREEZE |
34 |
special signal used by CPR |
THAW |
35 |
special signal used by CPR |