/usr/lib/R/site-library/altcdfenvs/INDEX is in r-bioc-altcdfenvs 1:2.40.0-1.
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 24 | AffyProbesMatch-class   Class "AffyProbesMatch"
CdfEnvAffy-class        Class "CdfEnvAffy"
appendCdfEnvAffy        append probe sets to a CdfEnvAffy
buildCdfEnv.biostrings
                        Build CDF environments
cdfenvEx                CdfEnvAffy
copyCdfEnvAffy          make a copy of a CdfEnvAffy
countduplicated         Count the number of times probes are used
geneNames.CdfEnvAffy    get the names of the known probe sets
getxy.probeseq          A function to get the XY coordinates from a
                        probes sequences data frame
index2xy                Functions to shuttle from indexes to XY
                        coordinates
indexProbes.CdfEnvAffy
                        indexes for probes
matchAffyProbes         Match the probes on an Affymetrix array
plot.CdfEnvAffy         A function to 'plot' a CdfEnvAffy
read.FASTA.entry        Functions to work with FASTA files /
                        connections
removeIndex             A function to remove probes in an environment
toHypergraph            Transform to an hypergraph
unique.CdfEnvAffy       Remove duplicated elements from a CdfEnvAffy
validAffyBatch          Check validity of a CdfEnvAffy.
wrapCdfEnvAffy          functions related to cdfenvs
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