/usr/lib/R/site-library/fGarch/INDEX is in r-cran-fgarch 2110.80.1-1.
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 10 11 12 13 14 15 16 17 18 19 20 21 22 23 | TimeSeriesData          Time Series Data Sets
absMoments              Absolute Moments of GARCH Distributions
coef-methods            GARCH Coefficients Methods
fGARCH-class            Class "fGARCH"
fGARCHSPEC-class        Class "fGARCHSPEC"
fGarch-package          GARCH Modelling Package
fitted-methods          Extract GARCH Model Fitted Values
formula-methods         Extract GARCH Model formula
garchFit                Univariate GARCH Time Series Fitting
garchFitControl         GARCH Fitting Algorithms and Control
garchSim                Univariate GARCH/APARCH Time Series Simulation
garchSpec               Univariate GARCH Time Series Specification
plot-methods            GARCH Plot Methods
predict-methods         GARCH Prediction Function
residuals-methods       Extract GARCH Model Residuals
sged                    Skew GED Distribution and Parameter Estimation
show-methods            GARCH Modelling Show Methods
snorm                   Skew Normal Distribution and Parameter
                        Estimation
std                     Skew Student-t Distribution and Parameter
                        Estimation
summary-methods         GARCH Summary Methods
volatility.fGARCH       Extract GARCH Model Volatility
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