/usr/lib/pd/extra/upp/grnd.pd is in pd-upp 0.1.0-2.
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 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 | #N canvas 341 168 380 515 10;
#X obj 45 91 inlet;
#X text 143 240 S;
#X obj 142 209 *;
#X obj 108 209 *;
#X obj 108 238 +;
#X obj 108 285 log;
#X obj 108 308 /;
#X obj 108 328 * -2;
#X obj 108 349 sqrt;
#X obj 45 379 *;
#X obj 45 468 outlet;
#X obj 45 114 t b b;
#X text 28 13 deliver normally distributed random number with unit
standard deviation and zero mean;
#X obj 45 142 urnd;
#X obj 45 173 t a a a;
#X obj 135 174 t a a;
#X obj 135 143 urnd;
#X obj 108 264 t a a;
#X text 29 43 Box-Muller transformation;
#X obj 45 292 cos;
#X obj 45 264 * 6.28319;
#X obj 225 91 inlet;
#X obj 225 144 f \$1;
#X obj 270 91 loadbang;
#X obj 45 422 max;
#X obj 45 445 min;
#X text 52 396 clip the result;
#X obj 74 422 * -1;
#X obj 226 381 t a a;
#X msg 225 202 1e+30;
#X obj 225 171 select 0;
#X connect 0 0 11 0;
#X connect 2 0 4 1;
#X connect 3 0 4 0;
#X connect 4 0 17 0;
#X connect 5 0 6 0;
#X connect 6 0 7 0;
#X connect 7 0 8 0;
#X connect 8 0 9 1;
#X connect 9 0 24 0;
#X connect 11 0 13 0;
#X connect 11 1 16 0;
#X connect 13 0 14 0;
#X connect 14 0 20 0;
#X connect 14 1 3 0;
#X connect 14 2 3 1;
#X connect 15 0 2 0;
#X connect 15 1 2 1;
#X connect 16 0 15 0;
#X connect 17 0 5 0;
#X connect 17 1 6 1;
#X connect 19 0 9 0;
#X connect 20 0 19 0;
#X connect 21 0 22 0;
#X connect 22 0 30 0;
#X connect 23 0 22 0;
#X connect 24 0 25 0;
#X connect 25 0 10 0;
#X connect 27 0 24 1;
#X connect 28 0 27 0;
#X connect 28 1 25 1;
#X connect 29 0 28 0;
#X connect 30 0 29 0;
#X connect 30 1 28 0;
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