/usr/lib/R/site-library/readBrukerFlexData/INDEX is in r-cran-readbrukerflexdata 1.7-1.
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 | cpSpecHpcMzXml          Mass spectrum generated by Bruker Daltonics
                        CompassXport
mqReadBrukerFlex        Reads mass spectrometry data into MALDIquant.
readBrukerFlexData-package
                        The readBrukerFlexData Package
readBrukerFlexDir       Reads recursively mass spectrometry data in
                        Bruker Daltonics XMASS format.
readBrukerFlexFile      Reads mass spectrometry data in Bruker
                        Daltonics XMASS format.
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