Scientific Operations



KILL(II)                     12/15/74                    KILL(II)



NAME
     kill  -  send signal to a process

SYNOPSIS
     (kill = 37.; not in assembler)
     (process number in r0)
     sys kill; sig

     kill(pid, sig);

DESCRIPTION
     Kill  sends  the  signal sig to the process specified by the
     process number in r0.  See signal(II) for a  list  of  sig-
     nals.

     The  sending  and receiving processes must have the same ef-
     fective 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 which have the same controlling typewriter and us-
     er ID.

     In no case is it possible for a process to kill itself.

SEE ALSO
     signal(II), kill(I)

DIAGNOSTICS
     The  error  bit  (c-bit) is set 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.  From C, -1 is returned.

























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