/usr/lib/puredata/doc/2.control.examples/15.array.pd is in puredata-doc 0.43.0-4.
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 67 68 69 70 | #N canvas 268 28 1030 744 12;
#X text 204 19 ARRAYS;
#N canvas 0 0 450 300 graph1 0;
#X array array99 100 float 0;
#X coords 0 1 99 -1 400 300 1;
#X restore 614 49 graph;
#X msg 179 325 \; array99 resize \$1;
#X floatatom 179 292 0 0 0;
#X floatatom 21 260 0 0 0;
#X obj 21 294 / 100;
#X msg 21 324 \; array99 const \$1;
#X text 22 233 You can send messages to an array object:;
#X msg 341 325 \; array99 print;
#X text 64 262 <-- set to a constant value;
#X text 221 291 resize;
#X text 342 286 print size;
#X text 22 487 read a text file;
#X text 23 558 write a text file;
#X text 271 559 write a WAV format soundfile;
#X obj 104 714 tabread;
#X obj 255 714 tabwrite;
#X text 20 665 Objects are provided for reading and writing the contents
of arrays via control messages:;
#X obj 602 654 tabread4~;
#X obj 602 679 tabwrite~;
#X obj 695 654 tabreceive~;
#X text 593 601 ...and audio signals:;
#X obj 695 630 tabsend~;
#X msg 381 400 \; array99 normalize;
#X msg 382 442 \; array99 normalize 0.5;
#X text 375 378 normalize to 1 or otherwise;
#X obj 266 537 soundfiler;
#X obj 812 631 tabosc4~;
#X msg 19 402 \; array99 sinesum 64 0.2 0.2 0.2 0.2;
#X msg 19 444 \; array99 cosinesum 64 0.2 0.2 0.2 0.2;
#X text 23 378 Fourier synthesis (resizes table);
#X text 257 484 read a soundfile;
#X text 735 698 last updated for release 0.34;
#X obj 175 715 tabread4;
#X obj 602 628 tabread~;
#X msg 267 511 read ../sound/voice2.wav array99;
#X text 19 47 Arrays in Pd provide a unified way to deal with lists
of numbers \, treating them as either audio samples or for "control"
uses. To make one \, select "array" on the "new" menu. Dialogs appear
to help you choose the name \, number of elements \, and various flags.
;
#X text 17 134 You can also change the array size using the "resize"
message shown below. Arrays live in graphs and graphs may hold more
than one array--however \, graphs containing more than one array won't
know how to readjust themselves automatically when the arrays are resized.
;
#X msg 15 507 \; array99 read 15.file.txt;
#X obj 26 581 bng 15 250 50 0 empty empty empty 0 -6 0 8 -262144 -1
-1;
#X obj 26 600 savepanel;
#X msg 26 623 \; array99 write \$1;
#X obj 270 577 bng 15 250 50 0 empty empty empty 0 -6 0 8 -262144 -1
-1;
#X obj 270 596 savepanel;
#X obj 270 642 soundfiler;
#X msg 270 619 write \$1 array99;
#X connect 3 0 2 0;
#X connect 4 0 5 0;
#X connect 5 0 6 0;
#X connect 35 0 26 0;
#X connect 39 0 40 0;
#X connect 40 0 41 0;
#X connect 42 0 43 0;
#X connect 43 0 45 0;
#X connect 45 0 44 0;
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