| Signal Name | Number | Description | ||
| SIGHUP | 1 | Hangup (POSIX) | ||
| SIGINT | 2 | Terminal interrupt (ANSI) | ||
| SIGQUIT | 3 | Terminal quit (POSIX) | ||
| SIGILL | 4 | Illegal instruction (ANSI) | ||
| SIGTRAP | 5 | Trace trap (POSIX) | ||
| SIGIOT | 6 | IOT Trap (4.2 BSD) | ||
| SIGBUS | 7 | BUS error (4.2 BSD) | ||
| SIGFPE | 8 | Floating point exception (ANSI) | ||
| SIGKILL | 9 | Kill(can't be caught or ignored) (POSIX) | ||
| SIGUSR1 | 10 | User defined signal 1 (POSIX) | ||
| SIGSEGV | 11 | Invalid memory segment access (ANSI) | ||
| SIGUSR2 | 12 | User defined signal 2 (POSIX) | ||
| SIGPIPE | 13 | Write on a pipe with no reader, Broken pipe (POSIX) | ||
| SIGALRM | 14 | Alarm clock (POSIX) | ||
| SIGTERM | 15 | Termination (ANSI) | ||
| SIGSTKFLT | 16 | Stack fault | ||
| SIGCHLD | 17 | Child process has stopped or exited, changed (POSIX) | ||
| SIGCONT | 18 | Continue executing, if stopped (POSIX) | ||
| SIGSTOP | 19 | Stop executing(can't be caught or ignored) (POSIX) | ||
| SIGTSTP | 20 | Terminal stop signal (POSIX) | ||
| SIGTTIN | 21 | Background process trying to read, from TTY (POSIX) | ||
| SIGTTOU | 22 | Background process trying to 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) | ||
| SIGIO | 29 | I/O now possible (4.2 BSD) | ||
| SIGPWR | 30 | Power failure restart (System V) |
Tuesday, April 10, 2018
Linux Signals
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