GETPGRP(3)                 POSIX Programmer's Manual                GETPGRP(3)



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
       getpgrp -- get the process group ID of the calling process

SSYYNNOOPPSSIISS
       #include <unistd.h>

       pid_t getpgrp(void);

DDEESSCCRRIIPPTTIIOONN
       The _g_e_t_p_g_r_p() function shall return the process group ID of the calling
       process.

RREETTUURRNN VVAALLUUEE
       The _g_e_t_p_g_r_p() function shall always be successful and no return value
       is reserved to indicate an error.

EERRRROORRSS
       No errors are 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_.

EEXXAAMMPPLLEESS
       None.

AAPPPPLLIICCAATTIIOONN UUSSAAGGEE
       None.

RRAATTIIOONNAALLEE
       4.3 BSD provides a _g_e_t_p_g_r_p() function that returns the process group ID
       for a specified process. Although this function supports job control,
       all known job control shells always specify the calling process with
       this function. Thus, the simpler System V _g_e_t_p_g_r_p() suffices, and the
       added complexity of the 4.3 BSD _g_e_t_p_g_r_p() is provided by the XSI
       extension _g_e_t_p_g_i_d().

FFUUTTUURREE DDIIRREECCTTIIOONNSS
       None.

SSEEEE AALLSSOO
       _e_x_e_c, _f_o_r_k(), _g_e_t_p_g_i_d(), _g_e_t_p_i_d(), _g_e_t_p_p_i_d(), _k_i_l_l(), _s_e_t_p_g_i_d(),
       _s_e_t_s_i_d()

       The Base Definitions volume of POSIX.1-2017, <<ssyyss__ttyyppeess..hh>>, <<uunniissttdd..hh>>

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                           GETPGRP(3)
