KILL(2) KILL(2)
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 by pid. 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 ttyld(4).
If the process number is -1, and the user is the super-user,
the signal is broadcast universally except to processes 0, 1
and 2, the scheduler initialization, and pageout processes,
see init(8).
Processes 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.