sysconf(3P)                                           sysconf(3P)



NAME
     sysconf - gets configurable system variables

SYNOPSIS
     #include <unistd.h>

     long sysconf(name)
     int name;

DESCRIPTION
     sysconf allows an application to determine the current value
     of a configurable system variable.

     name represents the system variable to be queried.  The
     allowable values for name are:

        _SC_ARG_MAX
        _SC_CHILD_MAX
        _SC_CLK_TCK
        _SC_NGROUPS_MAX
        _SC_OPEN_MAX
        _SC_PASS_MAX
        _SC_PID_MAX
        _SC_UID_MAX
        _SC_EXIT_SIGHUP
        _SC_JOB_CONTROL
        _SC_KILL_PID_NEG1
        _SC_KILL_SAVED
        _SC_PGID_CLEAR
        _SC_SAVED_IDS
        _SC_VERSION


STATUS MESSAGES AND VALUES
     The sysconf program returns the current value of the
     specified variable.  The value returned will not be more
     restrictive than the value described to the application when
     it was compiled with <limits.h> or <unistd.h>.  The value
     will not change during the lifetime of the calling process.

     If name is not defined on the system or name is invalid,
     sysconf will return -1.

SEE ALSO
     pathconf(3P)










January 1992                                                    1