HPUX kill[2]

 kill(2)                                                             kill(2)





 NAME
      kill, raise - send a signal to a process or a group of processes

 SYNOPSIS
      #include <signal.h>

      int kill(pid_t pid, int sig);

      int raise(int sig);

 DESCRIPTION
      kill() sends a signal to a process or a group of processes.  The
      process or group of processes to which the signal is to be sent is
      specified by pid.  The signal to be sent is specified by sig and is
      either one from the list given in signal(2), or 0.

      raise() sends signal sig to the executing program.  The signal to be
      sent is specified by sig and is either one from the list given in
      signal(2), or 0.

      If sig is 0 (the null signal), error checking is performed but no
      signal is actually sent.  This can be used to check the validity of
      pid.

      The real or effective user ID of the sending process must match the
      real or saved user ID of the receiving process unless the effective
      user ID of the sending process is a user who has appropriate
      privileges.  As a single special case, the continue signal SIGCONT can
      be sent to any process that is a member of the same session as the
      sending process.

      The value KILL_ALL_OTHERS is defined in the file <sys/signal.h> and is
      guaranteed not to be the ID of any process in the system or the
      negation of the ID of any process in the system.

      If pid is greater than zero and not equal to KILL_ALL_OTHERS, sig is
      sent to the process whose process ID is equal to pid.  pid can equal 1
      unless sig is SIGKILL or SIGSTOP.

      If pid is 0, sig is sent to all processes excluding special system
      processes whose process group ID is equal to the process group ID of
      the sender.

      If pid is -1 and the effective user ID of the sender is not a user who
      has appropriate privileges.  sig is sent to all processes excluding
      special system processes whose real or saved user ID is equal to the
      real or effective user ID of the sender.

      If pid is -1 and the effective user ID of the sender is a user who has
      appropriate privileges, sig is sent to all processes excluding special
      system processes.



 Hewlett-Packard Company            - 1 -     HP-UX Release 9.0: August 1992






 kill(2)                                                             kill(2)





      If pid is KILL_ALL_OTHERS, kill() behaves much as when pid is equal to
      -1, except that sig is not sent to the calling process.

      If pid is negative but not -1 or KILL_ALL_OTHERS, sig is sent to all
      processes (excluding special system processes) whose process group ID
      is equal to the absolute value of pid, and whose real and/or effective
      user ID meets the constraints described above for matching user IDs.

 RETURN VALUE
      Upon successful completion, a value of 0 is returned.  Otherwise, a
      value of -1 is returned and errno is set to indicate the error.

 ERRORS
      kill() fails and no signal is sent if one or more of the following is
      true:

           [EINVAL]       sig is neither a valid signal number nor zero.

           [EINVAL]       sig is SIGKILL or SIGSTOP and pid is 1 (proc1).

           [EPERM]        The user ID of the sending process is not a user
                          who has appropriate privileges and its real or
                          effective user ID does not match the real or saved
                          user ID of the receiving process.

           [EPERM]        The sending and receiving processes are not in the
                          same session.

           [ESRCH]        No process or process group can be found
                          corresponding to that specified by pid.

      raise() fails and no signal is sent if the following is true:

           [EINVAL]       sig is not a valid signal number or zero.

 AUTHOR
      kill() was developed by HP, AT&T, and the University of California,
      Berkeley.

 SEE ALSO
      kill(1), getpid(2), setpgrp(2), signal(2), privilege(5).

 STANDARDS CONFORMANCE
      kill(): AES, SVID2, XPG2, XPG3, XPG4, FIPS 151-2, POSIX.1

      raise(): AES, XPG4, ANSI C








 Hewlett-Packard Company            - 2 -     HP-UX Release 9.0: August 1992