1QDEL(1P)                   POSIX Programmer's Manual                  QDEL(1P)
2
3
4

PROLOG

6       This  manual  page is part of the POSIX Programmer's Manual.  The Linux
7       implementation of this interface may differ (consult the  corresponding
8       Linux  manual page for details of Linux behavior), or the interface may
9       not be implemented on Linux.
10
11

NAME

13       qdel — delete batch jobs
14

SYNOPSIS

16       qdel job_identifier...
17

DESCRIPTION

19       A batch job is deleted by sending a request to the  batch  server  that
20       manages  the  batch job. A batch job that has been deleted is no longer
21       subject to management by batch services.
22
23       The qdel utility is a user-accessible client  of  batch  services  that
24       requests the deletion of one or more batch jobs.
25
26       The  qdel  utility  shall  request a batch server to delete those batch
27       jobs for which a batch job_identifier is presented to the utility.
28
29       The qdel utility shall delete batch jobs in the order  in  which  their
30       batch job_identifiers are presented to the utility.
31
32       If  the qdel utility fails to process any batch job_identifier success‐
33       fully, the  utility  shall  proceed  to  process  the  remaining  batch
34       job_identifiers, if any.
35
36       The  qdel  utility  shall delete each batch job by sending a Delete Job
37       Request to the batch server that manages the batch job.
38
39       The qdel utility shall not exit until the batch  job  corresponding  to
40       each successfully processed batch job_identifier has been deleted.
41

OPTIONS

43       None.
44

OPERANDS

46       The  qdel utility shall accept one or more operands that conform to the
47       syntax for a batch job_identifier (see Section 3.3.1, Batch Job Identi‐
48       fier).
49

STDIN

51       Not used.
52

INPUT FILES

54       None.
55

ENVIRONMENT VARIABLES

57       The following environment variables shall affect the execution of qdel:
58
59       LANG      Provide  a  default  value for the internationalization vari‐
60                 ables that are unset or null. (See the Base Definitions  vol‐
61                 ume  of POSIX.1‐2008, Section 8.2, Internationalization Vari‐
62                 ables the precedence of internationalization  variables  used
63                 to determine the values of locale categories.)
64
65       LC_ALL    If  set  to  a non-empty string value, override the values of
66                 all the other internationalization variables.
67
68       LC_CTYPE  Determine the locale for the interpretation of  sequences  of
69                 bytes of text data as characters (for example, single-byte as
70                 opposed to multi-byte characters in arguments).
71
72       LC_MESSAGES
73                 Determine the locale that should be used to affect the format
74                 and  contents  of  diagnostic  messages  written  to standard
75                 error.
76
77       LOGNAME   Determine the login name of the user.
78

ASYNCHRONOUS EVENTS

80       Default.
81

STDOUT

83       An implementation of the qdel utility may write informative messages to
84       standard output.
85

STDERR

87       The standard error shall be used only for diagnostic messages.
88

OUTPUT FILES

90       None.
91

EXTENDED DESCRIPTION

93       None.
94

EXIT STATUS

96       The following exit values shall be returned:
97
98        0    Successful completion.
99
100       >0    An error occurred.
101

CONSEQUENCES OF ERRORS

103       In  addition  to  the  default  behavior, the qdel utility shall not be
104       required to write a diagnostic message to standard error when the error
105       reply received from a batch server indicates that the batch job_identi‐
106       fier does not exist on the server. Whether  or  not  the  qdel  utility
107       waits  to  output the diagnostic message while attempting to locate the
108       job on other servers is implementation-defined.
109
110       The following sections are informative.
111

APPLICATION USAGE

113       None.
114

EXAMPLES

116       None.
117

RATIONALE

119       The qdel utility allows users and administrators to delete jobs.
120
121       The qdel utility provides functionality that is  not  otherwise  avail‐
122       able.  For  example,  the kill utility of the operating system does not
123       suffice. First, to use the kill utility, the user might have to log  in
124       on  a remote node, because the kill utility does not operate across the
125       network. Second, unlike qdel, kill  cannot  remove  jobs  from  queues.
126       Lastly,  the  arguments  of the qdel utility are job identifiers rather
127       than process identifiers, and so this utility can be passed the  output
128       of the qselect utility, thus providing users with a means of deleting a
129       list of jobs.
130
131       Because a set of jobs can be selected using the  qselect  utility,  the
132       qdel  utility  has  not  been complicated with options that provide for
133       selection of jobs. Instead, the batch jobs to be deleted are identified
134       individually by their job identifiers.
135
136       Historically,  the qdel utility has been a component of NQS, the exist‐
137       ing practice on which it is based. However, the qdel utility defined in
138       this volume of POSIX.1‐2008 does not provide an option for specifying a
139       signal number to send to the batch job prior  to  the  killing  of  the
140       process; that capability has been subsumed by the qsig utility.
141
142       A  discussion was held about the delays of networking and the possibil‐
143       ity that the batch server may never respond, due to a down router, down
144       batch  server,  or  other  network mishap. The DESCRIPTION records this
145       under the words ``fails to process any job identifier''.  In the  broad
146       sense,  the  network problem is also an error, which causes the failure
147       to process the batch job identifier.
148

FUTURE DIRECTIONS

150       The qdel utility may be removed in a future version.
151

SEE ALSO

153       Chapter 3, Batch Environment Services, kill, qselect, qsig
154
155       The Base Definitions volume of  POSIX.1‐2008,  Chapter  8,  Environment
156       Variables
157
159       Portions  of  this text are reprinted and reproduced in electronic form
160       from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology
161       --  Portable  Operating  System  Interface (POSIX), The Open Group Base
162       Specifications Issue 7, Copyright (C) 2013 by the Institute of Electri‐
163       cal  and  Electronics  Engineers,  Inc  and  The  Open Group.  (This is
164       POSIX.1-2008 with the 2013 Technical Corrigendum  1  applied.)  In  the
165       event of any discrepancy between this version and the original IEEE and
166       The Open Group Standard, the original IEEE and The Open Group  Standard
167       is  the  referee document. The original Standard can be obtained online
168       at http://www.unix.org/online.html .
169
170       Any typographical or formatting errors that appear  in  this  page  are
171       most likely to have been introduced during the conversion of the source
172       files to man page format. To report such errors,  see  https://www.ker
173       nel.org/doc/man-pages/reporting_bugs.html .
174
175
176
177IEEE/The Open Group                  2013                             QDEL(1P)
Impressum