/etc/ is in percona-toolkit 2.2.7-1~dfsg1.
This file is owned by root:root, with mode 0o755.
..
/etc/percona-toolkit/
/etc/percona-toolkit/pt-fk-error-logger.conf
/etc/percona-toolkit/pt-diskstats.conf
/etc/percona-toolkit/pt-tcp-model.conf
/etc/percona-toolkit/pt-table-checksum.conf
/etc/percona-toolkit/pt-visual-explain.conf
/etc/percona-toolkit/pt-log-player.conf
/etc/percona-toolkit/pt-index-usage.conf
/etc/percona-toolkit/pt-mysql-summary.conf
/etc/percona-toolkit/pt-fifo-split.conf
/etc/percona-toolkit/pt-trend.conf
/etc/percona-toolkit/pt-upgrade.conf
/etc/percona-toolkit/pt-kill.conf
/etc/percona-toolkit/pt-pmp.conf
/etc/percona-toolkit/pt-config-diff.conf
/etc/percona-toolkit/pt-find.conf
/etc/percona-toolkit/pt-show-grants.conf
/etc/percona-toolkit/pt-archiver.conf
/etc/percona-toolkit/pt-query-digest.conf
/etc/percona-toolkit/pt-heartbeat.conf
/etc/percona-toolkit/pt-deadlock-logger.conf
/etc/percona-toolkit/pt-sift.conf
/etc/percona-toolkit/pt-duplicate-key-checker.conf
/etc/percona-toolkit/pt-table-sync.conf
/etc/percona-toolkit/pt-slave-restart.conf
/etc/percona-toolkit/pt-slave-delay.conf
/etc/percona-toolkit/pt-variable-advisor.conf
/etc/percona-toolkit/pt-stalk.conf
/etc/percona-toolkit/pt-summary.conf
/etc/percona-toolkit/pt-query-advisor.conf
/etc/percona-toolkit/pt-mext.conf
/etc/percona-toolkit/pt-slave-find.conf
/etc/percona-toolkit/pt-collect.conf
/etc/percona-toolkit/pt-online-schema-change.conf