/usr/lib/pd/extra/zexy/freadln-help.pd is in pd-zexy 2.2.5-2.
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 | #N canvas 0 31 859 326 10;
#X obj 443 239 print done;
#X text 72 260 see also:;
#X msg 433 149 bang;
#X text 334 293 this outlet gets the lines in sequence.;
#X obj 130 281 textfile;
#X text 482 150 output one line as a list and move to the next;
#X text 508 222 This outlet gets a bang when you hit the end of the
sequence \; it will also get the current position when using "when"
;
#X text 618 7 part of zexy;
#X obj 406 267 print data;
#X obj 73 9 freadln;
#X text 18 57 The [freadln] object is a simplified version if [textfile].
It only supports reading files.;
#X text 15 95 features are :;
#X text 60 108 the file is not read into the objects buffer. instead
only the current line will be streamed from the file. this allows to
read _large_ files (which need not fit into the main memory at all)
;
#X text 58 199 no random access!;
#X text 9 183 drawbacks are :;
#X obj 130 262 fwriteln;
#X msg 433 178 close;
#X text 548 117 open a file in 'cr' mode;
#X obj 406 201 freadln;
#X msg 435 116 open test.mtx cr;
#N canvas 708 249 494 344 META 0;
#X text 12 145 HELP_PATCH_AUTHORS "pd meta" information added by Jonathan
Wilkes for Pd version 0.42.;
#X text 12 25 LICENSE GPL v2;
#X text 12 125 AUTHOR IOhannes m zmoelnig;
#X text 12 5 KEYWORDS control storage filesystem;
#X text 12 85 OUTLET_0 anything;
#X text 12 105 OUTLET_1 bang;
#X text 12 65 INLET_0 bang open close;
#X text 12 45 DESCRIPTION read text files line by line;
#X restore 806 297 pd META;
#X text 127 9 read text-files line-by-line;
#X connect 2 0 18 0;
#X connect 16 0 18 0;
#X connect 18 0 8 0;
#X connect 18 1 0 0;
#X connect 19 0 18 0;
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