# Is there a macro telling which OS we're using?

I got some LaTeX documents that I have to compile them under different TeX Live, such as MacTeX or TeX Live. But in different OS, the font seems different too, for example, while in Windows, I prefer to use Cambria, but in Mac, I like Lucida Grande more.

Is there was a macro to differentiate between OS?

As the accepted answer, We need to add more comments on this question, As I read the package manual, we need more settings to use these macros:

% packages we need
\usepackage{pdftexcmds}
\usepackage{catchfile}
\usepackage{ifluatex}
\usepackage{ifplatform}

Then we use these macros like that

\ifwindows
\fi
\iflinux
\fi
\ifmacosx
\if

now, it works well, the point is you need more packages not only ifplatform.

one more thing, compile your tex file with option -shell-escape is required:

xelatex -shell-escape file.tex
-

## migrated from stackoverflow.comNov 28 '12 at 15:22

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Related question, which doesn't provide a way for detecting MacTeX though: Is there a way to detect from inside a package that MikTeX is used? – doncherry Nov 28 '12 at 15:33