/usr/share/dpdk/examples/multi_process/ is in dpdk-doc 2.2.0-0ubuntu7.
This file is owned by root:root, with mode 0o755.
..
/usr/share/dpdk/examples/multi_process/Makefile
/usr/share/dpdk/examples/multi_process/client_server_mp/
/usr/share/dpdk/examples/multi_process/client_server_mp/Makefile
/usr/share/dpdk/examples/multi_process/client_server_mp/mp_client/
/usr/share/dpdk/examples/multi_process/client_server_mp/mp_client/Makefile
/usr/share/dpdk/examples/multi_process/client_server_mp/mp_client/client.c
/usr/share/dpdk/examples/multi_process/client_server_mp/mp_server/
/usr/share/dpdk/examples/multi_process/client_server_mp/mp_server/Makefile
/usr/share/dpdk/examples/multi_process/client_server_mp/mp_server/args.c
/usr/share/dpdk/examples/multi_process/client_server_mp/mp_server/args.h
/usr/share/dpdk/examples/multi_process/client_server_mp/mp_server/init.c
/usr/share/dpdk/examples/multi_process/client_server_mp/mp_server/init.h
/usr/share/dpdk/examples/multi_process/client_server_mp/mp_server/main.c
/usr/share/dpdk/examples/multi_process/client_server_mp/shared/
/usr/share/dpdk/examples/multi_process/client_server_mp/shared/common.h
/usr/share/dpdk/examples/multi_process/l2fwd_fork/
/usr/share/dpdk/examples/multi_process/l2fwd_fork/Makefile
/usr/share/dpdk/examples/multi_process/l2fwd_fork/flib.c
/usr/share/dpdk/examples/multi_process/l2fwd_fork/flib.h
/usr/share/dpdk/examples/multi_process/l2fwd_fork/main.c
/usr/share/dpdk/examples/multi_process/simple_mp/
/usr/share/dpdk/examples/multi_process/simple_mp/Makefile
/usr/share/dpdk/examples/multi_process/simple_mp/main.c
/usr/share/dpdk/examples/multi_process/simple_mp/mp_commands.c
/usr/share/dpdk/examples/multi_process/simple_mp/mp_commands.h
/usr/share/dpdk/examples/multi_process/symmetric_mp/
/usr/share/dpdk/examples/multi_process/symmetric_mp/Makefile
/usr/share/dpdk/examples/multi_process/symmetric_mp/main.c