удалить пакетные задания (delete 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)
qdel — delete batch jobs
Синопсис (Synopsis)
qdel job_identifier...
Описание (Description)
A batch job is deleted by sending a request to the batch server
that manages the batch job. A batch job that has been deleted is
no longer subject to management by batch services.
The qdel utility is a user-accessible client of batch services
that requests the deletion of one or more batch jobs.
The qdel utility shall request a batch server to delete those
batch jobs for which a batch job_identifier is presented to the
utility.
The qdel utility shall delete batch jobs in the order in which
their batch job_identifiers are presented to the utility.
If the qdel utility fails to process any batch job_identifier
successfully, the utility shall proceed to process the remaining
batch job_identifiers, if any.
The qdel utility shall delete each batch job by sending a Delete
Job Request to the batch server that manages the batch job.
The qdel utility shall not exit until the batch job corresponding
to each successfully processed batch job_identifier has been
deleted.
Параметры (Options)
None.
Операнды (Operands)
The qdel 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
qdel:
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 qdel 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 qdel 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 qdel utility waits to output the diagnostic message while
attempting to locate the job on other servers is implementation-
defined.
The following sections are informative.
Использование в приложениях (Application usage)
None.
Примеры (Examples)
None.
Обоснование (Rationale)
The qdel utility allows users and administrators to delete jobs.
The qdel utility provides functionality that is not otherwise
available. For example, the kill utility of the operating system
does not suffice. First, to use the kill utility, the user might
have to log in on a remote node, because the kill utility does
not operate across the network. Second, unlike qdel, kill cannot
remove jobs from queues. Lastly, the arguments of the qdel
utility are job identifiers rather than process identifiers, and
so this utility can be passed the output of the qselect utility,
thus providing users with a means of deleting a list of jobs.
Because a set of jobs can be selected using the qselect utility,
the qdel utility has not been complicated with options that
provide for selection of jobs. Instead, the batch jobs to be
deleted are identified individually by their job identifiers.
Historically, the qdel utility has been a component of NQS, the
existing practice on which it is based. However, the qdel utility
defined in this volume of POSIX.1‐2017 does not provide an option
for specifying a signal number to send to the batch job prior to
the killing of the process; that capability has been subsumed by
the qsig utility.
A discussion was held about the delays of networking and the
possibility that the batch server may never respond, due to a
down router, down batch server, or other network mishap. The
DESCRIPTION records this under the words ``fails to process any
job identifier''. In the broad sense, the network problem is
also an error, which causes the failure to process the batch job
identifier.
Будущие направления (Future directions)
The qdel utility may be removed in a future version.
Смотри также (See also)
Chapter 3, Batch Environment Services, kill(1p), qselect(1p),
qsig(1p)
The Base Definitions volume of POSIX.1‐2017, Chapter 8,
Environment Variables
