上一篇文章介绍了ubus的组件和实现原理，本文通过代码实例介绍使用ubus进行进程间通信的三种方式。 invoke的方式实现端对端通信 最简单的

ubus为openwrt平台开发中的进程间通信提供了一个通用的框架。它让进程间通信的实现变得非常简单，并且ubus具有很强的可移植性，可以很

JSON-RPC From Wikipedia, the free encyclopedia Jump to navigationJump to search JSON-RPC is a remote procedure call protocol encoded in JSON. It is similar to the XML-RPC protocol, defining only a few data types and commands. JSON-RPC allows for notifications (data sent to the server that does not require a response) and for multiple calls to be sent to the server which may be answered asynchronously. Version Description Dated 1.0

打印表 function PrintTable(table, key, level) level = level or 1 local indent = "" for i = 1, level do indent = indent.." " end if key ~= nil then print(indent..key.." ".."=".." ".."{") else print(indent .. "{") end for k,v in pairs(table) do if type(v) == "table" then PrintTable(v, key, level + 1) else local content = string.format("%s%s = %s", indent .. " ",tostring(k), tostring(v)) print(content) end end

单行注释：使用“#” 多行注释：使用“#[[ ]]” 以下图为例 以上内容转载自互联网，若有侵权请联系站长删除

#include <time.h> #include <stdio.h> int main(int argc, char *argv[]) { time_t tt = time(0); char buf[32] = {0}; strftime(buf, sizeof(buf), "%Y-%m-%d %H:%M:%S", localtime(&tt)); return 0; }

原样输出字符串: printf("%s", str); 输出指定长度的字符串, 超长时不截断, 不足时右对齐: printf("%Ns", str); –N 为指定长度的10进制数值 输出指定长度的字符串, 超长时不截断, 不足

配置編譯環境 必須使用非root用戶 安裝依賴包 // Ubuntu 14.04 必選 # apt-get install asciidoc bash bc binutils bzip2 fastjar flex git-core g++ build-essential util-linux gawk libgtk2.0-dev intltool jikespg zlib1g-dev genisoimage libncurses5-dev libssl-dev patch perl-modules python2.7-dev rsync ruby sdcc unzip wget gettext xsltproc libboost1.55-dev libboost1.55-tools-dev libxml-parser-perl libusb-dev bin86 bcc bzr ecj sharutils openjdk-7-jdk zip