This file is indexed.

/usr/lib/radare/bin/symbytediff is in radare-common 1:1.5.2-6.

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

The actual contents of the file can be viewed below.

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#!/usr/bin/env perl
#
# Look for symbol-byte-level differences between two elfs
# 
# pancake <youterm.com>
#

my $a=$ARGV[0];
my $b=$ARGV[1];

die "Usage: rsc symbytediff [a-file] [b-file]\n"
	if ($a eq "" or $b eq "" or $a eq "-h");

sub domybest {
	unlink $tmpa;
	unlink $tmpb;
	exit 0;
}

sub ow_yeah {
    foreach (@_) {
	print "$1\n" if(/^\+([^:]+)/ and !/^\+\+/);
    }
}

$SIG{INT}=\&domybest;

my $tmpa="/tmp/.a.$$.".int rand(0xfef);
my $tmpb="/tmp/.b.$$.".int rand(0xefe);

system("rsc syms-dump $a > $tmpa");
system("rsc syms-dump $b > $tmpb");
my @difflines=`diff -u $tmpa $tmpb`;
ow_yeah @difflines;

domybest;