2013の直下にtexmf.cnfがあります.
内容は
% (Public domain.)
% This texmf.cnf file should contain only your personal changes from the
% original texmf.cnf (for example, as chosen in the installer).
%
% That is, if you need to make changes to texmf.cnf, put your custom
% settings in this file, which is .../texlive/YYYY/texmf.cnf, rather than
% the distributed file (which is .../texlive/YYYY/texmf-dist/web2c/texmf.cnf).
% And include *only* your changed values, not a copy of the whole thing!
%
TEXMFLOCAL = /Users/Shared/TeXLive/texmf
TEXMFSYSVAR = /Users/Shared/TeXLive/texmf-var
TEXMFSYSCONFIG = /Users/Shared/TeXLive/texmf-config
TEXMFHOME = ~/TeXLive/texmf
TEXMFVAR = ~/TeXLive/texmf-var
TEXMFCONFIG = ~/TeXLive/texmf-config
shell_escape_commands = \
bibtex,bibtex8,bibtexu,pbibtex,upbibtex,biber,\
kpsewhich,\
makeindex,mendex,texindy,\
mpost,pmpost,upmpost,\
repstopdf,epspdf,extractbb
となっています.