This file is indexed.

/usr/bin/gdbtui is in gdb 7.11.1-0ubuntu1~16.5.

This file is owned by root:root, with mode 0o755.

The actual contents of the file can be viewed below.

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#!/bin/sh

prog=$(basename $0 tui)

dir=$(dirname $0)
if [ "$dir" != "." ]; then
   prog=$dir/$prog
fi

exec $prog --tui "$@"