| SIGHUP | 1 | /* Hangup (POSIX). */ |
| SIGINT | 2 | /* Interrupt (ANSI). */ |
| SIGQUIT | 3 | /* Quit (POSIX). */ |
| SIGILL | 4 | /* Illegal instruction (ANSI). */ |
| SIGTRAP | 5 | /* Trace trap (POSIX). */ |
| SIGABRT | 6 | /* Abort (ANSI). */ |
| SIGIOT | 6 | /* IOT trap (4.2 BSD). */ |
| SIGBUS | 7 | /* BUS error (4.2 BSD). */ |
| SIGFPE | 8 | /* Floating-point exception (ANSI). */ |
| SIGKILL | 9 | /* Kill, unblockable (POSIX). */ |
| SIGUSR1 | 10 | /* User-defined signal 1 (POSIX). */ |
| SIGSEGV | 11 | /* Segmentation violation (ANSI). */ |
| SIGUSR2 | 12 | /* User-defined signal 2 (POSIX). */ |
| SIGPIPE | 13 | /* Broken pipe (POSIX). */ |
| SIGALRM | 14 | /* Alarm clock (POSIX). */ |
| SIGTERM | 15 | /* Termination (ANSI). */ |
| SIGSTKFLT | 16 | /* Stack fault. */ |
| SIGCLD | SIGCHLD | /* Same as SIGCHLD (System V). */ |
| SIGCHLD | 17 | /* Child status has changed (POSIX). */ |
| SIGCONT | 18 | /* Continue (POSIX). */ |
| SIGSTOP | 19 | /* Stop, unblockable (POSIX). */ |
| SIGTSTP | 20 | /* Keyboard stop (POSIX). */ |
| SIGTTIN | 21 | /* Background read from tty (POSIX). */ |
| SIGTTOU | 22 | /* Background write to tty (POSIX). */ |
| SIGURG | 23 | /* Urgent condition on socket (4.2 BSD). */ |
| SIGXCPU | 24 | /* CPU limit exceeded (4.2 BSD). */ |
| SIGXFSZ | 25 | /* File size limit exceeded (4.2 BSD). */ |
| SIGVTALRM | 26 | /* Virtual alarm clock (4.2 BSD). */ |
| SIGPROF | 27 | /* Profiling alarm clock (4.2 BSD). */ |
| SIGWINCH | 28 | /* Window size change (4.3 BSD, Sun). */ |
| SIGPOLL | SIGIO | /* Pollable event occurred (System V). */ |
| SIGIO | 29 | /* I/O now possible (4.2 BSD). */ |
| SIGPWR | 30 | /* Power failure restart (System V). */ |
| SIGSYS | 31 | /* Bad system call. */ |
| SIGUNUSED | 31 |


