/usr/lib/pd/extra/rtc/lin2dB.pd is in pd-rtclib 4.1-1.
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 | #N canvas 430 275 240 143 10;
#X obj 34 34 inlet;
#X obj 34 89 outlet;
#X text 60 91 1992 by Gerhard Eckel
;
#X obj 34 61 expr 20*log10($f1);
#X connect 0 0 3 0;
#X connect 3 0 1 0;
|