NAME

kill  −  send signal to a process

SYNOPSIS

kill(pid, sig);

DESCRIPTION

Kill sends the signal sig to the process specified by the process number in r0.  See signal(2) for a list of signals.

The sending and receiving processes must have the same effective user ID, otherwise this call is restricted to the super-user. 

If the process number is 0, the signal is sent to all other processes in the sender’s process group; see tty(4).

If the process number is −1, and the user is the super-user, the signal is broadcast universally except to processes 0 and 1, the scheduler and initialization processes, see init(8).

Proccesses may send signals to themselves. 

SEE ALSO

signal(2), kill(1)

DIAGNOSTICS

Zero is returned if the process is killed; −1 is returned if the process does not have the same effective user ID and the user is not super-user, or if the process does not exist. 

ASSEMBLER (PDP-11)

(kill = 37.) 
(process number in r0)
sys kill; sig

7th Edition