/usr/share/yacas/scripts/integrate.rep/om.ys is in yacas 1.3.6-2+b1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 | // From code.ys.def:
OMDef( "Integrate", "calculus1","defint", // Same argument reordering as Sum.
{ $, _2 .. _3, OMBIND(OMS("fns1", "lambda"), OMBVAR(_1), _4) },
{ $, _{2,2,1}, _{1,1}, _{1,2}, _{2,3} }
);
OMDef( "AntiDeriv", "yacas","AntiDeriv" );
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