sysconf - get configurable system variables (POSIX)
sysconf provides a method to determine the current values of certain
configurable system limits, options and parameters.
If the optional name argument or list is given, sysconf(1) will print the
value of each requested system parameter, one per line. If name is not
supplied, sysconf(1) will print all known values with accompanying
parameter names. In some cases the value will be 1 or -1, indicating
that the system does (1) or does not (-1) implement that particular
feature. Refer to the manual entry for sysconf(3C) for information about
the meaning of the individual parameters.
sysconf exits with a status of 1 if any errors are encountered, otherwise
it exits with status 0.
pathconf(1), sysconf(3C), pathconf(2), limits(4)
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