QDEL(1)                    POSIX Programmer's Manual                   QDEL(1)



PPRROOLLOOGG
       This manual page is part of the POSIX Programmer's Manual.  The OS
       implementation of this interface may differ (consult the corresponding
       OS manual page for details of OS behavior), or the interface may not be
       implemented on OS.

NNAAMMEE
       qdel -- delete batch jobs

SSYYNNOOPPSSIISS
       qdel _j_o_b___i_d_e_n_t_i_f_i_e_r...

DDEESSCCRRIIPPTTIIOONN
       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 _q_d_e_l utility is a user-accessible client of batch services that
       requests the deletion of one or more batch jobs.

       The _q_d_e_l utility shall request a batch server to delete those batch
       jobs for which a batch _j_o_b___i_d_e_n_t_i_f_i_e_r is presented to the utility.

       The _q_d_e_l utility shall delete batch jobs in the order in which their
       batch _j_o_b___i_d_e_n_t_i_f_i_e_rs are presented to the utility.

       If the _q_d_e_l utility fails to process any batch _j_o_b___i_d_e_n_t_i_f_i_e_r
       successfully, the utility shall proceed to process the remaining batch
       _j_o_b___i_d_e_n_t_i_f_i_e_rs, if any.

       The _q_d_e_l utility shall delete each batch job by sending a _D_e_l_e_t_e _J_o_b
       _R_e_q_u_e_s_t to the batch server that manages the batch job.

       The _q_d_e_l utility shall not exit until the batch job corresponding to
       each successfully processed batch _j_o_b___i_d_e_n_t_i_f_i_e_r has been deleted.

OOPPTTIIOONNSS
       None.

OOPPEERRAANNDDSS
       The _q_d_e_l utility shall accept one or more operands that conform to the
       syntax for a batch _j_o_b___i_d_e_n_t_i_f_i_e_r (see _S_e_c_t_i_o_n _3_._3_._1, _B_a_t_c_h _J_o_b
       _I_d_e_n_t_i_f_i_e_r).

SSTTDDIINN
       Not used.

IINNPPUUTT FFIILLEESS
       None.

EENNVVIIRROONNMMEENNTT VVAARRIIAABBLLEESS
       The following environment variables shall affect the execution of _q_d_e_l:

       _L_A_N_G      Provide a default value for the internationalization
                 variables that are unset or null. (See the Base Definitions
                 volume of POSIX.1-2017, _S_e_c_t_i_o_n _8_._2, _I_n_t_e_r_n_a_t_i_o_n_a_l_i_z_a_t_i_o_n
                 _V_a_r_i_a_b_l_e_s the precedence of internationalization variables
                 used to determine the values of locale categories.)

       _L_C___A_L_L    If set to a non-empty string value, override the values of
                 all the other internationalization variables.

       _L_C___C_T_Y_P_E  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).

       _L_C___M_E_S_S_A_G_E_S
                 Determine the locale that should be used to affect the format
                 and contents of diagnostic messages written to standard
                 error.

       _L_O_G_N_A_M_E   Determine the login name of the user.

AASSYYNNCCHHRROONNOOUUSS EEVVEENNTTSS
       Default.

SSTTDDOOUUTT
       An implementation of the _q_d_e_l utility may write informative messages to
       standard output.

SSTTDDEERRRR
       The standard error shall be used only for diagnostic messages.

OOUUTTPPUUTT FFIILLEESS
       None.

EEXXTTEENNDDEEDD DDEESSCCRRIIPPTTIIOONN
       None.

EEXXIITT SSTTAATTUUSS
       The following exit values shall be returned:

        0    Successful completion.

       >0    An error occurred.

CCOONNSSEEQQUUEENNCCEESS OOFF EERRRROORRSS
       In addition to the default behavior, the _q_d_e_l 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
       _j_o_b___i_d_e_n_t_i_f_i_e_r does not exist on the server. Whether or not the _q_d_e_l
       utility waits to output the diagnostic message while attempting to
       locate the job on other servers is implementation-defined.

       _T_h_e _f_o_l_l_o_w_i_n_g _s_e_c_t_i_o_n_s _a_r_e _i_n_f_o_r_m_a_t_i_v_e_.

AAPPPPLLIICCAATTIIOONN UUSSAAGGEE
       None.

EEXXAAMMPPLLEESS
       None.

RRAATTIIOONNAALLEE
       The _q_d_e_l utility allows users and administrators to delete jobs.

       The _q_d_e_l utility provides functionality that is not otherwise
       available. For example, the _k_i_l_l utility of the operating system does
       not suffice. First, to use the _k_i_l_l utility, the user might have to log
       in on a remote node, because the _k_i_l_l utility does not operate across
       the network. Second, unlike _q_d_e_l, _k_i_l_l cannot remove jobs from queues.
       Lastly, the arguments of the _q_d_e_l utility are job identifiers rather
       than process identifiers, and so this utility can be passed the output
       of the _q_s_e_l_e_c_t utility, thus providing users with a means of deleting a
       list of jobs.

       Because a set of jobs can be selected using the _q_s_e_l_e_c_t utility, the
       _q_d_e_l 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 _q_d_e_l utility has been a component of NQS, the
       existing practice on which it is based. However, the _q_d_e_l 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 _q_s_i_g
       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.

FFUUTTUURREE DDIIRREECCTTIIOONNSS
       The _q_d_e_l utility may be removed in a future version.

SSEEEE AALLSSOO
       _C_h_a_p_t_e_r _3, _B_a_t_c_h _E_n_v_i_r_o_n_m_e_n_t _S_e_r_v_i_c_e_s, _k_i_l_l, _q_s_e_l_e_c_t, _q_s_i_g

       The Base Definitions volume of POSIX.1-2017, _C_h_a_p_t_e_r _8, _E_n_v_i_r_o_n_m_e_n_t
       _V_a_r_i_a_b_l_e_s

CCOOPPYYRRIIGGHHTT
       Portions of this text are reprinted and reproduced in electronic form
       from IEEE Std 1003.1-2017, Standard for Information Technology --
       Portable Operating System Interface (POSIX), The Open Group Base
       Specifications Issue 7, 2018 Edition, Copyright (C) 2018 by the
       Institute of Electrical and Electronics Engineers, Inc and The Open
       Group.  In the event of any discrepancy between this version and the
       original IEEE and The Open Group Standard, the original IEEE and The
       Open Group Standard is the referee document. The original Standard can
       be obtained online at http://www.opengroup.org/unix/online.html .

       Any typographical or formatting errors that appear in this page are
       most likely to have been introduced during the conversion of the source
       files to man page format. To report such errors, see
       https://www.kernel.org/doc/man-pages/reporting_bugs.html .



IEEE/The Open Group                  2017                              QDEL(1)
