--- /dev/null
+#!/usr/bin/env bash
+
+set -e
+
+case "$OSTYPE" in
+ linux*)
+ cat /proc/cpuinfo
+ cat /proc/meminfo
+ ;;
+ darwin*)
+ system_profiler SPHardwareDataType
+ ;;
+esac
+
+rsync --version
+
+# Older versions of par2 don't support -V, but it'll still show the
+# version when it fails.
+if command -v par2; then par2 -V || true; fi