сигнальные пакетные задания (signal batch jobs)
Пролог (Prolog)
This manual page is part of the POSIX Programmer's Manual. The
Linux implementation of this interface may differ (consult the
corresponding Linux manual page for details of Linux behavior),
or the interface may not be implemented on Linux.
Имя (Name)
qsig — signal batch jobs
Синопсис (Synopsis)
qsig [-s signal] job_identifier...
Описание (Description)
To signal a batch job is to send a signal to the session leader
of the batch job. A batch job is signaled by sending a request to
the batch server that manages the batch job. The qsig utility is
a user-accessible batch client that requests the signaling of a
batch job.
The qsig utility shall signal those batch jobs for which a batch
job_identifier is presented to the utility. The qsig utility
shall not signal any batch jobs whose batch job_identifiers are
not presented to the utility.
The qsig utility shall signal batch jobs in the order in which
the corresponding batch job_identifiers are presented to the
utility. If the qsig utility fails to process a batch
job_identifier successfully, the utility shall proceed to process
the remaining batch job_identifiers, if any.
The qsig utility shall signal batch jobs by sending a Signal Job
Request to the batch server that manages the batch job.
For each successfully processed batch job_identifier, the qsig
utility shall have received a completion reply to each Signal Job
Request sent to a batch server at the time the utility exits.
Параметры (Options)
The qsig utility shall conform to the Base Definitions volume of
POSIX.1‐2017, Section 12.2, Utility Syntax Guidelines.
The following option shall be supported by the implementation:
-s signal Define the signal to be sent to the batch job.
The qsig utility shall accept a signal option-argument
that is either a symbolic signal name or an unsigned
integer signal number (see the POSIX.1‐1990 standard,
Section 3.3.1.1). The qsig utility shall accept signal
names for which the SIG prefix has been omitted.
If the signal option-argument is a signal name, the
qsig utility shall send that name.
If the signal option-argument is a number, the qsig
utility shall send the signal value represented by the
number.
If the -s option is not presented to the qsig utility,
the utility shall send the signal SIGTERM to each
signaled batch job.
Операнды (Operands)
The qsig utility shall accept one or more operands that conform
to the syntax for a batch job_identifier (see Section 3.3.1,
Batch Job Identifier).
Стандартный ввод (Stdin)
Not used.
Входные файлы (Input files)
None.
Переменные окружения (Environment variables)
The following environment variables shall affect the execution of
qsig:
LANG Provide a default value for the internationalization
variables that are unset or null. (See the Base
Definitions volume of POSIX.1‐2017, Section 8.2,
Internationalization Variables the precedence of
internationalization variables used to determine the
values of locale categories.)
LC_ALL If set to a non-empty string value, override the values
of all the other internationalization variables.
LC_CTYPE Determine the locale for the interpretation of
sequences of bytes of text data as characters (for
example, single-byte as opposed to multi-byte
characters in arguments).
LC_MESSAGES
Determine the locale that should be used to affect the
format and contents of diagnostic messages written to
standard error.
LOGNAME Determine the login name of the user.
Асинхронные события (Asynchronous events)
Default.
Стандартный вывод (Stdout)
An implementation of the qsig utility may write informative
messages to standard output.
Стандартный вывод сообщений (Stderr)
The standard error shall be used only for diagnostic messages.
Выходные файлы (Output files)
None.
Расширенное описание (Extended description)
None.
Статус выхода (Exit)
The following exit values shall be returned:
0 Successful completion.
>0 An error occurred.
Последствия ошибок (Consequences of errors)
In addition to the default behavior, the qsig utility shall not
be required to write a diagnostic message to standard error when
the error reply received from a batch server indicates that the
batch job_identifier does not exist on the server. Whether or not
the qsig utility waits to output the diagnostic message while
attempting to locate the batch job on other servers is
implementation-defined.
The following sections are informative.
Использование в приложениях (Application usage)
None.
Примеры (Examples)
None.
Обоснование (Rationale)
The qsig utility allows users to signal batch jobs.
A user may be unable to signal a batch job with the kill utility
of the operating system for a number of reasons. First, the
process ID of the batch job may be unknown to the user. Second,
the processes of the batch job may be on a remote node. However,
by virtue of communication between batch nodes, the qsig utility
can arrange for the signaling of a process.
Because a batch job that is not running cannot be signaled, and
because the signal may not terminate the batch job, the qsig
utility is not a substitute for the qdel utility.
The options of the qsig utility allow the user to specify the
signal that is to be sent to the batch job.
The -s option allows users to specify a signal by name or by
number, and thus override the default signal. The POSIX.1‐1990
standard defines signals by both name and number.
The qsig utility is a new utility, vis-a-vis existing practice;
it has been defined in this volume of POSIX.1‐2017 in response to
user-perceived shortcomings in existing practice.
Будущие направления (Future directions)
The qsig utility may be removed in a future version.
Смотри также (See also)
Chapter 3, Batch Environment Services, kill(1p), qdel(1p)
The Base Definitions volume of POSIX.1‐2017, Chapter 8,
Environment Variables, Section 12.2, Utility Syntax Guidelines
