以下摘录来自https://github.com/openresty/lua-resty-core/blob/master/lib/ngx/process.md。如何在不启动OpenResty（Nginx）的情况下使用resty CLI运行代码？每次更新代码片段时，重启/重新加载一个完整的Nginx守护程序是很繁琐的。

# http config
init_by_lua_block {
    local process = require "ngx.process"

    -- enables privileged agent process
    local ok, err = process.enable_privileged_agent()
    if not ok then
        ngx.log(ngx.ERR, "enables privileged agent failed error:", err)
    end

    -- output process type
    ngx.log(ngx.INFO, "process type: ", process.type())
}

init_worker_by_lua_block {
    local process = require "ngx.process"
    ngx.log(ngx.INFO, "process type: ", process.type())
}

server {
    # ...
    location = /t {
        content_by_lua_block {
            local process = require "ngx.process"
            ngx.say("process type: ", process.type())
            ngx.say("master process pid: ", process.get_master_pid() or "-")
        }
    }
}