/etc/cron.hourly/graphite_build_search_index is in graphite-web 0.9.12+debian-6.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 | #!/bin/sh
set -e
if [ -x /usr/bin/graphite-build-search-index ]; then
/usr/bin/graphite-build-search-index
fi
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