Nginx PageSpeed pagespeed not working

i have just installed the latest stable centmin
and when i try to run pscontrol it says command not found

do i have to change any other setting because i do not see it compiled with nginx

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Code:

[root@s1 conf.d]# nginx -V
nginx version: nginx/1.9.11
built by clang 3.4.2 (tags/RELEASE_34/dot2-final)
built with LibreSSL 2.2.6
TLS SNI support enabled
configure arguments: --with-ld-opt='-lrt -ljemalloc -Wl,-z,relro' --with-cc-opt='-m64 -mtune=native -g -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wno-sign-compare -Wno-string-plus-int -Wno-deprecated-declarations -Wno-unused-parameter -Wno-unused-const-variable -Wno-conditional-uninitialized -Wno-mismatched-tags -Wno-c++11-extensions -Wno-sometimes-uninitialized -Wno-parentheses-equality -Wno-tautological-compare -Wno-self-assign -Wno-deprecated-register -Wno-deprecated -Wno-invalid-source-encoding -Wno-pointer-sign -Wno-parentheses -Wno-enum-conversion' --sbin-path=/usr/local/sbin/nginx --conf-path=/usr/local/nginx/conf/nginx.conf --with-http_ssl_module --with-http_v2_module --with-http_gzip_static_module --with-http_stub_status_module --with-http_sub_module --with-http_addition_module --with-http_image_filter_module --with-http_secure_link_module --with-http_realip_module --with-http_geoip_module --with-openssl-opt=enable-tlsext --add-module=../ngx-fancyindex-ngx-fancyindex --add-module=../ngx_cache_purge-2.3 --add-module=../nginx-accesskey-2.0.3 --add-module=../nginx-http-concat-master --add-module=../openresty-memc-nginx-module-4f6f78f --add-module=../openresty-srcache-nginx-module-ffa9ab7 --add-module=../ngx_devel_kit-0.2.19 --add-module=../set-misc-nginx-module-0.29 --add-module=../echo-nginx-module-0.58 --add-module=../redis2-nginx-module-0.12 --add-module=../ngx_http_redis-0.3.7 --add-module=../nginx_upstream_check_module-0.3.0 --add-module=../nginx-module-vts --add-module=../headers-more-nginx-module-0.28 --with-openssl=../libressl-2.2.6 --with-libatomic --with-threads --with-stream --with-stream_ssl_module --with-pcre=../pcre-8.37 --with-pcre-jit