/usr/lib/fastdnaml/bin/treefile2prolog is in fastdnaml 1.2.2-11+b1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 | #! /bin/sh
#
sed -e '1 s/^/pseudoNewick(/' -e 's/] /], /' -e 's/;/)./' $*
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