Singular

LIB "latex.lib";
intmat m[3][4] = 9,2,4,5,2,5,-2,4,-6,10,-1,2,7;
opentex("exp001");
texobj("exp001","An intmat:  ",m);
closetex("exp001");
tex("exp001");
==> calling latex2e for: exp001.tex 
==> 
==> This is pdfTeX, Version 3.14159265-2.6-1.40.17 (TeX Live 2016) (preloaded\
    format=latex)
==>  restricted \write18 enabled.
==> entering extended mode
==> (./exp001.tex
==> LaTeX2e <2016/03/31> patch level 3
==> Babel <3.9r> and hyphenation patterns for 3 language(s) loaded.
==> (/usr/share/texmf-dist/tex/latex/base/article.cls
==> Document Class: article 2014/09/29 v1.4h Standard LaTeX document class
==> (/usr/share/texmf-dist/tex/latex/base/size10.clo))
==> (/usr/share/texmf-dist/tex/latex/amsmath/amsmath.sty
==> For additional information on amsmath, use the `?' option.
==> (/usr/share/texmf-dist/tex/latex/amsmath/amstext.sty
==> (/usr/share/texmf-dist/tex/latex/amsmath/amsgen.sty))
==> (/usr/share/texmf-dist/tex/latex/amsmath/amsbsy.sty)
==> (/usr/share/texmf-dist/tex/latex/amsmath/amsopn.sty))
==> (/usr/share/texmf-dist/tex/latex/amsfonts/amssymb.sty
==> (/usr/share/texmf-dist/tex/latex/amsfonts/amsfonts.sty))
==> No file exp001.aux.
==> (/usr/share/texmf-dist/tex/latex/amsfonts/umsa.fd)
==> (/usr/share/texmf-dist/tex/latex/amsfonts/umsb.fd) [1] (./exp001.aux) )
==> Output written on exp001.dvi (1 page, 524 bytes).
==> Transcript written on exp001.log.
xdvi("exp001");
==> calling  xdvi  for : exp001 
==> 
system("sh","rm exp001.*");
==> 0