/usr/lib/R/site-library/Biostrings/extdata/fastaEx.fa is in r-bioc-biostrings 2.38.0-1.
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 | >sequence1
AGTACGTAGTCGCTGCTGCTACGGGCGCTAGCTAGTACGTCA
CGACGTAGATGCTAGCTGACTAAACGATGC
>sequence2
AAACGATCGATCGTACTCGACTGATGTAGTATATACGTCGTACGTAG
CATCGTCAGTTACTGCATGCGGG
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