/usr/lib/R/site-library/fOptions/INDEX is in r-cran-foptions 3022.85-1.
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 9 | BasicAmericanOptions    Valuation of Basic American Options
BinomialTreeOptions     Binomial Tree Option Model
HestonNandiGarchFit     Heston-Nandi Garch(1,1) Modelling
HestonNandiOptions      Option Price for the Heston-Nandi Garch Option
                        Model
LowDiscrepancy          Low Discrepancy Sequences
MonteCarloOptions       Monte Carlo Valuation of Options
PlainVanillaOptions     Valuation of Plain Vanilla Options
fOptions-package        Basic Option Valuation
 |