kill(1) - send a signal to a process
kill [ -signal | -s signal ] pid ...
kill [ -L | -V, --version ]
kill -l  [ signal ]
Name     Num   Action    Description
0          0   n/a       exit code indicates if a signal may be sent
ALRM      14   exit
HUP        1   exit
INT        2   exit
KILL       9   exit      cannot be blocked
PIPE      13   exit
POLL           exit
PROF           exit
TERM      15   exit
USR1           exit
USR2           exit
VTALRM         exit
STKFLT         exit      might not be implemented
PWR            ignore    might exit on some systems
WINCH          ignore
CHLD           ignore
URG            ignore
TSTP           stop      might interact with the shell
TTIN           stop      might interact with the shell
TTOU           stop      might interact with the shell
STOP           stop      cannot be blocked
CONT           restart   continue if stopped, otherwise ignore
ABRT       6   core
FPE        8   core
ILL        4   core
QUIT       3   core
SEGV      11   core
TRAP       5   core
SYS            core      might not be implemented
EMT            core      might not be implemented
BUS            core      core dump might fail
XCPU           core      core dump might fail
XFSZ           core      core dump might fail