/usr/share/phoronix-test-suite/pts-core/external-test-dependencies/scripts/install-angstrom-packages.sh is in phoronix-test-suite 4.8.3-1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 | #!/bin/sh
opkg install $*
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