/usr/share/dpdk/examples/quota_watermark/ is in dpdk-doc 2.2.0-0ubuntu7.
This file is owned by root:root, with mode 0o755.
..
/usr/share/dpdk/examples/quota_watermark/Makefile
/usr/share/dpdk/examples/quota_watermark/include/
/usr/share/dpdk/examples/quota_watermark/include/conf.h
/usr/share/dpdk/examples/quota_watermark/qw/
/usr/share/dpdk/examples/quota_watermark/qw/Makefile
/usr/share/dpdk/examples/quota_watermark/qw/args.c
/usr/share/dpdk/examples/quota_watermark/qw/args.h
/usr/share/dpdk/examples/quota_watermark/qw/init.c
/usr/share/dpdk/examples/quota_watermark/qw/init.h
/usr/share/dpdk/examples/quota_watermark/qw/main.c
/usr/share/dpdk/examples/quota_watermark/qw/main.h
/usr/share/dpdk/examples/quota_watermark/qwctl/
/usr/share/dpdk/examples/quota_watermark/qwctl/Makefile
/usr/share/dpdk/examples/quota_watermark/qwctl/commands.c
/usr/share/dpdk/examples/quota_watermark/qwctl/commands.h
/usr/share/dpdk/examples/quota_watermark/qwctl/qwctl.c
/usr/share/dpdk/examples/quota_watermark/qwctl/qwctl.h