getconf(1)

NAME
     getconf - get configuration variables (XPG4)

SYNOPSIS
     getconf [ -v specification ] system_var

     getconf [ -v specification ] path_var path_name

DESCRIPTION
     getconf provides a method to determine the current values of certain
     configurable system limits, options and parameters.

     If the system_var argument is given, getconf(1) will print the value of
     the requested system parameter.

     If the path_var and pathname arguments are given, getconf(1) will print
     the value of the requested variable specified by the path_var argument
     for the path specified by the pathname operand.

OPTIONS
     The following option is supported:

     -v specification

               Indicate a specification and version of a XBS5 conforming
               compilation environment for which configuration variables are
               to be determined.  Valid specification values are:

               XBS5_ILP32_OFF32
               XBS5_ILP32_OFFBIG
               XBS5_LP64_OFF64
               XBS5_LPBIG_OFFBIG

     Currently, there are no variable values that are affected by this option.


OPERANDS
     The following operands are supported:

     path_var

               A name of a configuration variable whose value is available
               from the pathconf() function.  All of the values in the
               following table are supported in addition to others described
               in pathconf(1):

     LINK_MAX            NAME_MAX              _POSIX_CHOWN_RESTRICTED
     MAX_CANON           PATH_MAX              _POSIX_NO_TRUNC
     MAX_INPUT           PIPE_BUF              _POSIX_VDISABLE

     pathname
               A pathname for which the variable specified by path_var is to
               be determined.

     system_var

               A name of a configuration variable whose value is available
               from the sysconf() function.  All of the values in the
               following table are supported:

     ARG_MAX             POSIX2_BC_SCALE_MAX   _POSIX_OPEN_MAX
     ATEXIT_MAX          POSIX2_BC_STRING_MAX  _POSIX_PATH_MAX
     BC_BASE_MAX         POSIX2_CHAR_TERM      _POSIX_PIPE_BUF
     BC_DIM_MAX          POSIX2_COLL_WEIGHTS_MAX
     BC_SCALE_MAX        POSIX2_C_BIND         _POSIX_SAVED_IDS
     BC_STRING_MAX       POSIX2_C_DEV          _POSIX_STREAM_MAX
     CHARCLASS_NAME_MAX  POSIX2_C_VERSION      _POSIX_TZNAME_MAX
     CHAR_BIT            POSIX2_EXPR_NEST_MAX  _POSIX_VERSION
     CHAR_MAX            POSIX2_FORT_DEV       _XOPEN_CRYPT
     CHAR_MIN            POSIX2_FORT_RUN       _XOPEN_ENH_I18N
     CHILD_MAX           POSIX2_LINE_MAX       _XOPEN_SHM
     CLK_TCK             POSIX2_LOCALEDEF      _XOPEN_UNIX
     COLL_WEIGHTS_MAX    POSIX2_RE_DUP_MAX     _XOPEN_VERSION
     CS_PATH             POSIX2_SW_DEV         _XOPEN_XCU_VERSION
     EXPR_NEST_MAX       POSIX2_UPE            _XOPEN_XPG2
     INT_MAX             POSIX2_VERSION        _XOPEN_XPG3
     IOV_MAX             RE_DUP_MAX            _XOPEN_XPG4
     KERN_POINTERS       SCHAR_MAX             _XBS5_ILP32_OFF32
     KERN_SIM            SCHAR_MIN             _XBS5_ILP32_OFFBIG
     LINE_MAX            SHRT_MIN              _XBS5_LP64_OFF64
     LONG_BIT            SSIZE_MAX             _XBS5_LPBIG_OFFBIG
     LONG_MAX            STREAM_MAX            XBS5_ILP32_OFF32_CFLAGS
     LONG_MIN            TMP_MAX               XBS5_ILP32_OFF32_LDFLAGS
     MB_LEN_MAX          TZNAME_MAX            XBS5_ILP32_OFF32_LIBS
     NGROUPS_MAX         UCHAR_MAX             XBS5_ILP32_OFF32_LINTFLAGS
     NL_ARGMAX           UINT_MAX              XBS5_ILP32_OFFBIG_CFLAGS
     NL_LANGMAX          ULONG_MAX             XBS5_ILP32_OFFBIG_LDFLAGS
     NL_MAX              USHRT_MAX             XBS5_ILP32_OFFBIG_LIBS
     NL_MSGMAX           WORD_BIT              XBS5_ILP32_OFFBIG_LINTFLAGS
     NL_SETMAX           _POSIX_ARG_MAX        XBS5_LP64_OFF64_CFLAGS
     NL_TEXTMAX          _POSIX_CHILD_MAX      XBS5_LP64_OFF64_LDFLAGS
     NZERO               _POSIX_JOB_CONTROL    XBS5_LP64_OFF64_LIBS
     OPEN_MAX            _POSIX_LINK_MAX       XBS5_LP64_OFF64_LINTFLAGS
     PAGESIZE            _POSIX_MAX_CANON      XBS5_LPBIG_OFFBIG_CFLAGS
     PAGE_SIZE           _POSIX_MAX_INPUT      XBS5_LPBIG_OFFBIG_LDFLAGS
     POSIX2_BC_BASE_MAX  _POSIX_NAME_MAX       XBS5_LPBIG_OFFBIG_LIBS
     POSIX2_BC_DIM_MAX   _POSIX_NGROUPS_MAX    XBS5_LPBIG_OFFBIG_LINTFLAGS

STDOUT
     If the specified variable is defined on the system and its value is
     described to be available, its value will be written in the following
     format:
          "%s\n", <value>

     Otherwise, if the specified variable is defined on the system, its value
     will be written in the following format:

          "%d\n", <value>

     If the specified variable is valid, but is undefined on the system,
     getconf will write using the following format:

          "undefined\n"

     If the variable name is invalid or an error occurs, nothing will be
     written to standard output.

EXIT STATUS
     getconf exits with a status of greater than zero if any errors are
     encountered, otherwise it exits with status 0.

SEE ALSO
     pathconf(1), sysconf(3C), pathconf(2), limits(4)