Function

kill invokes the kill callable service to send a signal to a process or process group.

Parameters

pid

A number, the process ID of the process or process group to which the caller wants to send a signal.

signal

The signal to be sent. You can set the value by using a numeric value (see REXX predefined variables or the predefined variable beginning with SIG used to derive the numeric value:

Variable	Description
SIGABND	Abend
SIGABRT	Abnormal termination
SIGALRM	Timeout
SIGBUS	Bus error
SIGCHLD	Child process terminated or stopped
SIGCONT	Continue if stopped
SIGFPE	Erroneous arithmetic operation, such as division by zero or an operation resulting in an overflow
SIGHUP	Hangup detected on the controlling terminal
SIGILL	Termination that cannot be caught or ignored
SIGINT	Interactive attention
SIGIO	Completion of input or output
SIGIOERR	Error on input/output; used by the C runtime library
SIGKILL	Termination that cannot be caught or ignored
SIGPIPE	Write on a pipe with no readers
SIGPOLL	Pollable event
SIGPROF	Profiling timer expired
SIGQUIT	Interactive termination
SIGSEGV	Detection of an incorrect memory reference
SIGSTOP	Stop that cannot be caught or ignored
SIGSYS	Bad system call
SIGTERM	Termination
SIGTRAP	Trap used by the ptrace callable service
SIGTSTP	Interactive stop
SIGTTIN	Read from a controlling terminal attempted by a member of a background process group
SIGTTOU	Write from a controlling terminal attempted by a member of a background process group
SIGURG	High bandwidth data is available at a socket
SIGUSR1	Reserved as application-defined signal 1
SIGUSR2	Reserved as application-defined signal 2
SIGVTALRM	Virtual timer expired
SIGXCPU	CPU time limit exceeded
SIGXFSZ	File size limit exceeded

option

The name of a variable that contains exactly four bytes mapped by the BPXYPPSD macro.

Usage notes

1. A caller can send a signal if the real or effective user ID of the caller is the same as the real or saved set user ID of the intended recipient. A caller can also send signals if it has appropriate privileges.
2. Regardless of user ID, a caller can always send a SIGCONT signal to a process that is a member of the same session as the sender.
3. A caller can also send a signal to itself. If the signal is not blocked, at least one pending unblocked signal is delivered to the sender before the service returns control. Provided that no other unblocked signals are pending, the signal delivered is the signal sent.

See Using the REXX signal services for information on using signal services.