/usr/lib/pd/extra/iemlib/vcf_lp8~.pd is in pd-iemlib 1.20.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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#X obj 20 48 inlet~;
#X obj 20 358 outlet~;
#X text 69 47 ~signal_in~;
#X text 30 326 ~filtered signal_out~;
#X text 136 353 no arg.;
#X obj 63 76 inlet~;
#X obj 132 102 inlet~;
#X text 178 102 <signal> Q [-];
#X text 109 77 <signal> cutoff_frequency [Hz];
#X obj 20 285 vcf_filter~ lp2;
#X obj 20 307 vcf_filter~ lp2;
#X text 168 19 for frequency and Q;
#X obj 20 263 vcf_filter~ lp2;
#X text 12 8 vcf_lp8~;
#X text 136 7 lowpass 8.order with signal-inlets;
#X obj 20 241 vcf_filter~ lp2;
#X obj 63 163 iem_cot4~;
#X obj 132 127 iem_sqrt4~;
#X obj 132 150 iem_sqrt4~;
#X text 166 425 IEM KUG;
#X text 150 413 musil;
#X text 180 413 @;
#X text 186 413 iem.at;
#X text 101 402 (c) Thomas Musil 2000 - 2005;
#X text 149 435 Graz \, Austria;
#X connect 0 0 15 0;
#X connect 5 0 16 0;
#X connect 6 0 17 0;
#X connect 9 0 10 0;
#X connect 10 0 1 0;
#X connect 12 0 9 0;
#X connect 15 0 12 0;
#X connect 16 0 9 1;
#X connect 16 0 10 1;
#X connect 16 0 12 1;
#X connect 16 0 15 1;
#X connect 17 0 18 0;
#X connect 18 0 15 2;
#X connect 18 0 12 2;
#X connect 18 0 9 2;
#X connect 18 0 10 2;
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