getconf -- display POSIX configuration information

displays the system configuration values for filesystem specific variables.

http://mirrors.ccs.neu.edu/cgi-bin/unixhelp/man-cgi?getconf+1
http://lugli.org.ar/pipermail/linux/1999-June/043528.html
http://www.opengroup.org/onlinepubs/009695399/utilities/getconf.html

$ rpm -qf /usr/bin/getconf
glibc-common-2.3.2-11.9
$