GETCONF(1) General Commands Manual GETCONF(1)

getconf
get configuration values

getconf system_var

getconf path_var pathname

getconf -a [pathname]

The getconf utility writes the current value of a configurable system limit or option variable to the standard output.

The system_var argument specifies the system variable to be queried. The names of the system variables are from sysconf(3) with the leading “_SC_” removed.

The path_var argument specifies the pathname variable to be queried for the specified pathname argument. The names of the pathname variables are from pathconf(2) with the leading “_PC_” removed.

When invoked with the option -a, getconf writes a list of all applicable variables and their values to the standard output, in the format “name = value”.

For compatibility with other operating systems, getconf will ignore leading underscores in the names specified in the system_var and path_var arguments.

The getconf utility exits 0 on success, and >0 if an error occurs.

To retrieve the number of configured processors, use:
$ getconf NPROCESSORS_CONF

To retrieve the maximum number of bytes (excluding the trailing NUL) for a filename in the current directory, use:

$ getconf NAME_MAX .

pathconf(2), confstr(3), limits(3), sysconf(3)

The getconf utility conforms to IEEE Std 1003.2-1992 (“POSIX.2”).
February 18, 2024 NetBSD 9.4