/usr/lib/roaraudio/compbins/esdfilt is in libroar-compat1 0.4-2.
This file is owned by root:root, with mode 0o755.
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 | #!/bin/sh
_args='';
while [ -n "$1" ]
do
 k="$1";
 shift;
 case "$k" in
  '--')
   break;
  ;;
  '-s')
   _args="$_args -s $1";
   shift;
  ;;
  '-b')
   _args="$_args -b";
  ;;
  '-m')
   _args="$_args -m";
  ;;
  '-r')
   _args="$_args -r $1";
   shift;
  ;;
  '-half')
   _args="$_args -half";
  ;;
  '-double')
   _args="$_args -double";
  ;;
  '-'*)
   echo "Unknown option" >&2;
   exit 1;
  ;;
  *)
   echo "Unknown option" >&2;
   exit 1;
  ;;
 esac;
done
if [ "$*" != "" ]
then
 echo "Unknown option" >&2;
 exit 1;
fi
exec roarfilt $_args
#ll
 |