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      "title": "Binance币安合约带单跟单软件 3.0，支持跨交易所",
      "body": "<html>\n<p>\r和欧易一样，经过了很长一段时间的开发和测试，《Binance<a href=\"https://www.chengxulvtu.net/tag/binance/\">币安</a>合约带单跟单软件 3.0》，终于发布了。</p>\n<p>在 2.0 版本的基础上，3.0 版本修改了一些显而易见的问题，优化了跟单流程，并首次实现了跨交易所带单跟单，目前支持币安带欧易（欧易跟币安）。如果需要带单跟单其他交易所，可以联系定制开发。</p>\n<h2>什么是带单跟单软件？</h2>\n<p>经常有客户问我，有没有带单的可以选择。这样问，基本上是没明白我们的带单跟单软件是怎么用的。</p>\n<p>举个例子，假如你的朋友做交易很厉害，你想跟着他操作，总不能手动跟吧，是不是需要一个工具帮助你自动跟，带单跟单软件就是这样的工具。只需要登录软件后台，绑定你朋友的 API 和 你的 API，就可以实现自动跟单。你要跟谁的单子，只需要有他的 API，剩下的交给带单跟单软件。</p>\n<h2>使用场景</h2>\n<p>币安合约带单跟单软件有很多的使用场景，下面列举几个：</p>\n<ol><li>做社群的，可以1个带单号带多个跟单号；</li><li>跟朋友的单子，1个跟单号或多个跟1个带单号；</li><li>自己跟自己，这种情况一般是大账号跟小账号或多个子账号跟1个主账号。为什么要自己跟自己呢，一般有两种情况，第一，自己小账号操作没那么大压力；第二，下单比较大，1个账号有限制；</li><li>多级跟单，比如1个跟单号跟单，同时还可以作为带单号带其他跟单号。</li></ol>\n<h2>功能介绍</h2>\n<p>币安带单跟单软件 3.0 运行在服务器上，不需要本地下载安装，浏览器中访问即可。目前只支持 u本文永续合约。</p>\n<h3>登录界面</h3>\n<p><a href=\"https://www.chengxulvtu.net/wp-content/uploads/2023/04/2023041516201518.png\"><img src=\"https://www.chengxulvtu.net/wp-content/uploads/2023/04/2023041516201518.png\" alt=\"Binance币安合约带单跟单软件 3.0，支持跨交易所-程序旅途\"/></a></p>\n<p>付费后，使用账号和密码就可以登录后台。</p>\n<h3>带单管理</h3>\n<p>带单账户列表</p>\n<p><a href=\"https://www.chengxulvtu.net/wp-content/uploads/2023/04/2023041516281436.png\"><img src=\"https://www.chengxulvtu.net/wp-content/uploads/2023/04/2023041516281436.png\" alt=\"Binance币安合约带单跟单软件 3.0，支持跨交易所-程序旅途\"/></a></p>\n<p>点击“绑定带单账号”按钮，绑定带单 API</p>\n<p><a href=\"https://www.chengxulvtu.net/wp-content/uploads/2023/04/2023041516290725.png\"><img src=\"https://www.chengxulvtu.net/wp-content/uploads/2023/04/2023041516290725.png\" alt=\"Binance币安合约带单跟单软件 3.0，支持跨交易所-程序旅途\"/></a></p>\n<p>带单收益</p>\n<p><a href=\"https://www.chengxulvtu.net/wp-content/uploads/2023/04/2023041516342748.png\"><img src=\"https://www.chengxulvtu.net/wp-content/uploads/2023/04/2023041516342748.png\" alt=\"Binance币安合约带单跟单软件 3.0，支持跨交易所-程序旅途\"/></a></p>\n<h3>跟单管理</h3>\n<p>跟单账号列表</p>\n<p><a href=\"https://www.chengxulvtu.net/wp-content/uploads/2023/04/2023041516350937.png\"><img src=\"https://www.chengxulvtu.net/wp-content/uploads/2023/04/2023041516350937.png\" alt=\"Binance币安合约带单跟单软件 3.0，支持跨交易所-程序旅途\"/></a></p>\n<p>点击“绑定跟单账号”，绑定跟单 API</p>\n<p><a href=\"https://www.chengxulvtu.net/wp-content/uploads/2023/04/2023041516354160.png\"><img src=\"https://www.chengxulvtu.net/wp-content/uploads/2023/04/2023041516354160.png\" alt=\"Binance币安合约带单跟单软件 3.0，支持跨交易所-程序旅途\"/></a></p>\n<p>手动平仓</p>\n<p><a href=\"https://www.chengxulvtu.net/wp-content/uploads/2023/04/2023041516364753.png\"><img src=\"https://www.chengxulvtu.net/wp-content/uploads/2023/04/2023041516364753.png\" alt=\"Binance币安合约带单跟单软件 3.0，支持跨交易所-程序旅途\"/></a></p>\n<p>跟单实盘</p>\n<p><a href=\"https://www.chengxulvtu.net/wp-content/uploads/2023/04/2023041516381547.png\"><img src=\"https://www.chengxulvtu.net/wp-content/uploads/2023/04/2023041516381547.png\" alt=\"Binance币安合约带单跟单软件 3.0，支持跨交易所-程序旅途\"/></a></p>\n<p>实盘明细</p>\n<p><a href=\"https://www.chengxulvtu.net/wp-content/uploads/2023/04/2023041516385182.png\"><img src=\"https://www.chengxulvtu.net/wp-content/uploads/2023/04/2023041516385182.png\" alt=\"Binance币安合约带单跟单软件 3.0，支持跨交易所-程序旅途\"/></a></p>\n<p>跟单日志</p>\n<p><a href=\"https://www.chengxulvtu.net/wp-content/uploads/2023/04/2023041516392997.png\"><img src=\"https://www.chengxulvtu.net/wp-content/uploads/2023/04/2023041516392997.png\" alt=\"Binance币安合约带单跟单软件 3.0，支持跨交易所-程序旅途\"/></a></p>\n<p>上面列举了一些主要的功能，如果需要更多了解或购买，可以扫描下方二维码添加微信</p>\n<p><img src=\"https://www.chengxulvtu.net/wp-content/uploads/2023/03/2023032613523729.jpg\" alt=\"Binance币安合约带单跟单软件 3.0，支持跨交易所-程序旅途\"/></p>\n<h2>扩展阅读</h2>\n<p>《<a href=\"https://www.chengxulvtu.net/binance-futures-copy-trading-v3-tutorial/\">币安合约带单跟单软件3.0操作教程</a>》</p>\n<p>《<a href=\"https://www.chengxulvtu.net/binance-futures-copy-trading-v3-price/\">币安合约带单跟单软件3.0如何收费</a>》</p>\n<p>《<a href=\"https://www.chengxulvtu.net/how-to-try-binance-futures-copy-trading-v3/\">币安合约带单跟单软件3.0如何试用</a>》</p>\n<h2>历史版本</h2>\n<p>《<a href=\"https://www.chengxulvtu.net/binance-futures-follow-order-bot-2-0/\">币安合约跟单带单软件2.0</a>》</p>\n<p>《<a href=\"https://www.chengxulvtu.net/binance-api-follow-order-bot/\">币安合约跟单机器人</a>》</p>\n<p>\r<br/>\r<br/></p>\n</html>",
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      "body": "<html>\n<p>\r经过很长一段时间的开发和测试，《欧易OKX合约带单跟单软件 3.0》，终于发布了。</p>\n<p>在<a href=\"https://www.chengxulvtu.net/okx-futures-follow-order-bot-2-0/\"> 2.0</a> 版本的基础上，3.0 版本做了进一步优化，并首次实现了跨交易所带单跟单，目前支持欧易带币安（币安跟欧易）。如果需要带单跟单其他交易所，可以定制开发。</p>\n<h2>什么是带单跟单软件？</h2>\n<p>经常有客户问我，有没有带单的可以选择。这样问，基本上是没明白我们的带单跟单软件是干什么用的。</p>\n<p>举个例子，假如你的朋友做交易很厉害，你想跟着他操作，总不能手动跟吧，是不是需要一个工具帮助你自动跟，带单跟单软件就是这样的工具。只需要登录软件后台，绑定你朋友的 API 和 你的 API，就可以实现自动跟单。你要跟谁的单子，只需要有他的 API，剩下的交给带单跟单软件。</p>\n<h2>使用场景</h2>\n<p>欧易合约带单跟单软件有很多的使用场景，下面列举几个：</p>\n<ol><li>做社群的，可以1个带单号带多个跟单号；</li><li>跟朋友的单子，1个跟单号或多个跟1个带单号；</li><li>自己跟自己，这种情况一般是大账号跟小账号或多个子账号跟1个主账号。为什么要自己跟自己呢，一般有两种情况，第一，自己小账号操作没那么大压力；第二，下单比较大，1个账号有限制；</li><li>多级跟单，比如1个跟单号跟单，同时还可以作为带单号带其他跟单号。</li></ol>\n<h2>功能介绍</h2>\n<p>欧易带单跟单软件 3.0 运行在服务器上，不需要本地下载安装，浏览器中访问即可。目前只支持 u本文永续合约。</p>\n<h3>登录界面</h3>\n<p><a href=\"https://www.chengxulvtu.net/wp-content/uploads/2023/02/2023021119044819.png\"><img src=\"https://www.chengxulvtu.net/wp-content/uploads/2023/02/2023021119044819.png\" alt=\"OKX欧易合约带单跟单软件 3.0，支持跨交易所-程序旅途\"/></a></p>\n<p>付费后，使用账号和密码就可以登录后台。</p>\n<h3>带单管理</h3>\n<p>带单账户列表</p>\n<p><a href=\"https://www.chengxulvtu.net/wp-content/uploads/2023/03/2023032611530540.png\"><img src=\"https://www.chengxulvtu.net/wp-content/uploads/2023/03/2023032611530540.png\" alt=\"OKX欧易合约带单跟单软件 3.0，支持跨交易所-程序旅途\"/></a></p>\n<p>点击“绑定带单账号”按钮，绑定带单 API</p>\n<p><a href=\"https://www.chengxulvtu.net/wp-content/uploads/2023/03/2023032611561389.png\"><img src=\"https://www.chengxulvtu.net/wp-content/uploads/2023/03/2023032611561389.png\" alt=\"OKX欧易合约带单跟单软件 3.0，支持跨交易所-程序旅途\"/></a></p>\n<p>带单收益</p>\n<p><a href=\"https://www.chengxulvtu.net/wp-content/uploads/2023/03/2023032612400121.png\"><img src=\"https://www.chengxulvtu.net/wp-content/uploads/2023/03/2023032612400121.png\" alt=\"OKX欧易合约带单跟单软件 3.0，支持跨交易所-程序旅途\"/></a></p>\n<h3>跟单管理</h3>\n<p>跟单账号列表</p>\n<p><a href=\"https://www.chengxulvtu.net/wp-content/uploads/2023/03/2023032611592695.png\"><img src=\"https://www.chengxulvtu.net/wp-content/uploads/2023/03/2023032611592695.png\" alt=\"OKX欧易合约带单跟单软件 3.0，支持跨交易所-程序旅途\"/></a></p>\n<p>点击“绑定跟单账号”，绑定跟单 API</p>\n<p><a href=\"https://www.chengxulvtu.net/wp-content/uploads/2023/03/2023032612003575.png\"><img src=\"https://www.chengxulvtu.net/wp-content/uploads/2023/03/2023032612003575.png\" alt=\"OKX欧易合约带单跟单软件 3.0，支持跨交易所-程序旅途\"/></a></p>\n<p>手动平仓</p>\n<p><a href=\"https://www.chengxulvtu.net/wp-content/uploads/2023/03/2023032612251118.png\"><img src=\"https://www.chengxulvtu.net/wp-content/uploads/2023/03/2023032612251118.png\" alt=\"OKX欧易合约带单跟单软件 3.0，支持跨交易所-程序旅途\"/></a></p>\n<p>跟单实盘</p>\n<p><a href=\"https://www.chengxulvtu.net/wp-content/uploads/2023/03/2023032612261616.png\"><img src=\"https://www.chengxulvtu.net/wp-content/uploads/2023/03/2023032612261616.png\" alt=\"OKX欧易合约带单跟单软件 3.0，支持跨交易所-程序旅途\"/></a></p>\n<p>实盘明细</p>\n<p><a href=\"https://www.chengxulvtu.net/wp-content/uploads/2023/03/2023032612271083.png\"><img src=\"https://www.chengxulvtu.net/wp-content/uploads/2023/03/2023032612271083.png\" alt=\"OKX欧易合约带单跟单软件 3.0，支持跨交易所-程序旅途\"/></a></p>\n<p>跟单日志</p>\n<p><a href=\"https://www.chengxulvtu.net/wp-content/uploads/2023/03/2023032612280273.png\"><img src=\"https://www.chengxulvtu.net/wp-content/uploads/2023/03/2023032612280273.png\" alt=\"OKX欧易合约带单跟单软件 3.0，支持跨交易所-程序旅途\"/></a></p>\n<p>上面列举了一些主要的功能，如果需要更多了解或购买，可以扫描下方二维码添加微信</p>\n<p><a href=\"https://www.chengxulvtu.net/wp-content/uploads/2023/03/2023032613523729.jpg\"><img src=\"https://www.chengxulvtu.net/wp-content/uploads/2023/03/2023032613523729.jpg\" alt=\"OKX欧易合约带单跟单软件 3.0，支持跨交易所-程序旅途\"/></a></p>\n<h2>扩展阅读</h2>\n<p>《<a href=\"https://www.chengxulvtu.net/okx-futures-copy-trading-v3-tutorial/\">OKX欧易合约带单跟单软件3.0操作教程</a>》</p>\n<p>《<a href=\"https://www.chengxulvtu.net/okx-futures-copy-trading-v3-price/\">OKX欧易合约带单跟单软件3.0如何收费</a>》</p>\n<p>《<a href=\"https://www.chengxulvtu.net/how-to-try-okx-futures-copy-trading-v3/\">OKX欧易合约带单跟单软件3.0如何试用</a>》</p>\n<h2>历史版本</h2>\n<p>《<a href=\"https://www.chengxulvtu.net/okx-futures-follow-order-bot-2-0/\">Okx/欧易合约带单跟单软件2.0</a>》</p>\n<p>《<a href=\"https://www.chengxulvtu.net/okex-follow-order-bot/\">OKX/Okex欧易合约跟单软件1.0</a>》</p>\n<p>\r</p>\n</html>",
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      "body": "![1.jpg](https://cdn.steemitimages.com/DQmVXs5dCcEQFqVhzBY9JPwMXPoCe4BTu9kACgtFrPT8FBh/1.jpg)\n\n</p>\n<p>以前写过一篇<a href=\"/trading/@bitming/rsi\">RSI指标计算</a>的文章，总觉得有些问题，今天再重新写一下。</p>\n<h2>RSI计算公式</h2>\n<ul><li><strong>RSI = 100 – 100 / ( 1 + RS )</strong></li><li>RS = Relative Strength = AvgU / AvgD</li><li>AvgU = 过去N个Bar的Up Move平均值</li><li>AvgD = 过去N个Bar的Down Move平均值</li><li>N = RSI的周期</li><li>有三种不同的求AvgU和AvgD的方法</li></ul>\n<h2>计算RSI步骤</h2>\n<ol><li>计算 Up Move 和 Down Move （U 和 D）</li><li>计算 Up Move 和 Down Move 的平均值 ( AvgU 和 AvgD )</li><li>计算相对强弱 (RS)</li><li>计算RSI</li></ol>\n<h3>第一步：计算 Up Move 和 Down Move</h3>\n<p>下面以period = 14 为例。</p>\n<p>首先计算每个Bar的变化 change = Close(t) - Close(t-1)</p>\n<p>Close(t)表示当前Bar的收盘价，Close(t-1)表示前一个Bar的收盘价</p>\n<p>那么</p>\n<p>Up Move (U) = change &gt; 0 ? change : 0</p>\n<p>Down Move(D) = change &lt; 0 ? ABS(change):0</p>\n<h3>第二步：计算 AvgU 和 AvgD</h3>\n<p>有三种不同的计算平均的方法，分别是 SMA ，EMA 和 Wilder的平滑方法，通常我们使用Wilder的方法，在计算DMI,ATR指标时也是使用的Wilder的平滑方法</p>\n<p>Wilder的平滑方法和EMA的逻辑是一样的，只不过它的平滑因子是 <strong>α = 1 / N</strong> （N表示 RSI 周期）</p>\n<p>那么周期14的</p>\n<p>AvgU = 1/14 * U(t) + 13/14 * AvgU(t-1)</p>\n<p>AvgD = 1/14 *D(t) + 13/14 * AvgD(t-1)</p>\n<p>第1个AvgU的计算不适用上面的公式，还是按照简单移动平均（SMA）</p>\n<h3>第三步：计算RS</h3>\n<p>有了每个Bar的 AvgU 和 AvgD，计算相对强弱（RS）就简单了</p>\n<p>RS = AvgU / AvgD</p>\n<p>注意 AvgD 可能为0的情况</p>\n<h3>第四步：计算相对强弱指数（RSI）</h3>\n<p>最后，计算RSI，直接套用公式</p>\n<p>RSI = 100 - 100 / (1 + RS)</p>",
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      "body": "\n@bitming 你好，欢迎来到精彩的Steem世界~~~ 🙂\n\nSteem和其他社区有很多不同，新人在早期经常会面临**各种困难**，例如：\n\n1. 在Steem上活动是需要**能量**的，而新人能量很少，发了一段时间帖子没能量了就无法继续发帖。[点击此处](https://steemd.com/@bitming)查看Resource Credits（活动能量）：你目前总共还能发表 **18** 篇文章或者回帖，每天恢复的20%能量可支持发表 **3.8** 篇文章或者回帖，请控制好发帖节奏；\n1. Steem非常注重**版权和原创**。很多新人刚加入时从其他网站转载别人的文章发表，马上就会被**警告、惩罚甚至加入黑名单**；\n1. Steem的规则和玩法很丰富、但也比较复杂，新人经常有很多**疑问**希望解答、有很多**知识**需要学习；\n1. Steem是个**社交**平台，初期没有朋友和团队支持，举目无亲、无人搭理，很难生存；\n1. Steem是个**应用**平台，不仅仅是写作，**内涵多姿多彩**，如绘画、摄影、游戏、编程等等，但找到自己的定位和方向需要一些时间探索。\n\n为了**解决这些问题**，我们建议：\n\n1. 加入**新手村** @team-cn 参与各种活动与交流，和众多的多才多艺的小伙伴们一起玩耍，加入微信群便于提问和互动。想要加入新手村，可以在 @team-cn 的帖子下留言，或者联系村长 @ericet（微信账号：ericet）；\n1. 阅读[简明的新手攻略](https://busy.org/@ericet/db528bhdn3)，了解新手的基本玩法；如有时间，可以进一步阅读Steem中文社区联合创作的[《Steem指南》](https://steem-guides.github.io/steemh) ([PDF版](https://steem-guides.github.io/steemh/steemh.pdf) / [EPUB版](https://steem-guides.github.io/steemh/steemh.epub)) ，关注 @steem-guides 《Steem指南》，详细了解Steem中的规则、攻略、社交和人物。\n\n最后，再次欢迎你来到Steem中文社区大家庭🎉 ，祝你在Steem的旅程愉快！！！\n\n有任何问题，可以咨询 @team-cn 或 @cn-hello\n\n<div message_id=\"welcome\"></div>\n",
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      "body": "Congratulations @bitming! You have completed the following achievement on Steemit and have been rewarded with new badge(s) :\n\n[![](https://steemitimages.com/70x80/http://steemitboard.com/notifications/voted.png)](http://steemitboard.com/@bitming) Award for the number of upvotes received\n\n<sub>_Click on the badge to view your Board of Honor._</sub>\n<sub>_If you no longer want to receive notifications, reply to this comment with the word_ `STOP`</sub>\n\n\n\n**Do not miss the last post from @steemitboard:**\n[SteemitBoard and the Veterans on Steemit - The First Community Badge.](https://steemit.com/veterans/@steemitboard/steemitboard-and-the-veterans-on-steemit-the-first-community-badge)\n\n> Do you like [SteemitBoard's project](https://steemit.com/@steemitboard)? Then **[Vote for its witness](https://v2.steemconnect.com/sign/account-witness-vote?witness=steemitboard&approve=1)** and **get one more award**!",
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      "permlink": "centos-7-supervisor",
      "title": "CentOS 7 配置 Supervisor",
      "body": "Supervisor 的文档地址：http://www.supervisord.org/\n\n### 1. 安装 Supervisor\n\n```\nyum install supervisor\n```\n\n安装完成，如下图：\n\n![QQ截图20180821162222.png](https://cdn.steemitimages.com/DQmXwC4pJB7ekuPNmRZn7NHStwrh8ahuAx8umh2bScYJb4B/QQ%E6%88%AA%E5%9B%BE20180821162222.png)\n\n### 2. 配置 Supervisor\n\nSupervisor 的配置文件为：**/etc/supervisord.conf** ，Supervisor 所管理的应用的配置文件放在 **/etc/supervisord.d/** 目录中，这个目录可以在 supervisord.conf 中配置。\n\n![QQ截图20180821233818.png](https://cdn.steemitimages.com/DQmcc8nTqWEyyr5UsWfb29a8DprjGkwmj6AF6NhWkRaeJpH/QQ%E6%88%AA%E5%9B%BE20180821233818.png)\n\n##### 启动 Supervisor\n\n```\nsupervisord -c /etc/supervisor.conf\n```\n\n通过这种方式启动，服务器重启后 Supervisor 不会自动启动，不建议使用这种方式启动Supervisor。\n\n安装 Supervisor 后，在 **/usr/lib/systemd/system/** 目录中会有一个  **supervisord.service** 文件，内容如下：\n\n![QQ截图20180822000509.png](https://cdn.steemitimages.com/DQmZrXwBNGWFtDvPSkwNcSELvrb8UvkN7prwoJHTy6oiKA1/QQ%E6%88%AA%E5%9B%BE20180822000509.png)\n\n如果没有，在该目录中创建一个，用下面的内容替换：\n\n```\n# supervisord service for sysstemd (CentOS 7.0+)\n# by ET-CS (https://github.com/ET-CS)\n[Unit]\nDescription=Supervisor daemon\n\n[Service]\nType=forking\nExecStart=/usr/bin/supervisord\nExecStop=/usr/bin/supervisorctl $OPTIONS shutdown\nExecReload=/usr/bin/supervisorctl $OPTIONS reload\nKillMode=process\nRestart=on-failure\nRestartSec=42s\n\n[Install]\nWantedBy=multi-user.target\n```\n\n##### 启用开机启动\n\n```\nsystemctl enable supervisord.service\n```\n\n##### 启动Supervisor\n\n```\nsystemctl start supervisord.service\n```\n\n##### 查看Supervisor状态\n\n```\nsystemctl status supervisord.service\n```\n\n![QQ截图20180822001155.png](https://cdn.steemitimages.com/DQmVr3HNVNUmRFLfJLrMHvmwyLHxEmJv9keguK1QnVci8yk/QQ%E6%88%AA%E5%9B%BE20180822001155.png)\n\n### 3. 应用配置\n\nSupervisor 管理应用的进程，需要对每个应用进行配置。在 **/etc/supervisor.d** 中创建 **helloworld.ini**，每个应用对应一个配置文件即可。\n\n下面是配置文件的示例：\n\n```\n[program:helloworld]  ;程序的名称\ncommand = dotnet HelloWorld.dll ;执行的命令\ndirectory = /root/www/ ;命令执行的目录\nenvironment = ASPNETCORE__ENVIRONMENT=Production  ;环境变量\nuser = root  ;执行进程的用户\nstopsignal = INT  \nautostart = true  ;是否自动启动\nautorestart = true  ;是否自动重启\nstartsecs = 1  ;自动重启间隔\nstderr_logfile = /var/log/helloworld.err.log  ;标准错误日志\nstdout_logfile = /var/log/helloworld.out.log  ;标准输出日志\n```\n\n创建好配置文件后，重启 Supervisor\n\n```\nsupervisorctl reload\n```\n\n为确保没有错误，可以正常启动，使用前文提到的查看Supervisor状态的命令查看。或者查看要管理的进程是否启动，本例中可以使用下面的命令：\n\n```\nps -ef | grep HelloWorld.dll\n\n或\nps -ef | grep dotnet\n```\n\n### 4. Supervisor 管理进程\n\n有两种方式可以管理进程，命令行和UI界面。\n\n##### 命令行\n\n```\nsupervisorctl shutdown #关闭所有任务\n\nsupervisorctl stop|start program_name\n\nsupervisorctl status #查看所有任务状态\n```\n\n##### UI界面\n\n启用 UI 管理，首先将 /etc/supervisord.conf 配置文件中的 inet_http_server 节点取消注释。\n\n![QQ截图20180822151437.png](https://cdn.steemitimages.com/DQmdL1q5NN4Ug9Wjv9cpsaXub41d9Qc6ZZvZ3zvXMzfF6yT/QQ%E6%88%AA%E5%9B%BE20180822151437.png)\n\n修改后重启 Supervisor\n\n```\nsupervisorctl reload\n```\n\n在浏览器中打开地址，如下图所示。\n\n![QQ截图20180822150704.png](https://cdn.steemitimages.com/DQmNeXV2baaQoyapTWfoGGo6zcDyncSoPemfF4vhzZTwWaz/QQ%E6%88%AA%E5%9B%BE20180822150704.png)",
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      "body": "你說partiko？不用啊，直接appstore就有吧",
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      "title": "",
      "body": "Congratulations @bitming! You have completed the following achievement on Steemit and have been rewarded with new badge(s) :\n\n[![](https://steemitimages.com/70x70/http://steemitboard.com/notifications/firstcommented.png)](http://steemitboard.com/@bitming) You got a First Reply\n\n<sub>_Click on the badge to view your Board of Honor._</sub>\n<sub>_If you no longer want to receive notifications, reply to this comment with the word_ `STOP`</sub>\n\n\nTo support your work, I also upvoted your post!\n\n\n**Do not miss the last post from @steemitboard:**\n[SteemitBoard and the Veterans on Steemit - The First Community Badge.](https://steemit.com/veterans/@steemitboard/steemitboard-and-the-veterans-on-steemit-the-first-community-badge)\n\n> Do you like [SteemitBoard's project](https://steemit.com/@steemitboard)? Then **[Vote for its witness](https://v2.steemconnect.com/sign/account-witness-vote?witness=steemitboard&approve=1)** and **get one more award**!",
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      "permlink": "bichen-re-bitming-re-bichen-partiko-my-story-with-partiko8588uckb-20180819t022356132z",
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      "body": "所以当时不太懂，搞得很麻烦\n\nPosted using [Partiko Android](https://play.google.com/store/apps/details?id=io.partiko.android)",
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      "body": "下载ios需要香港或国外的apple id的",
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      "title": "CentOS 7 安装MySQL 7 并开启远程连接",
      "body": "### 1. 服务器环境\n\n服务器使用的是CentOS 7，如果你没有合适的服务器，我推荐使用Vultr，地址：https://www.vultr.com/?ref=7471754 。\n\n### 2. 安装MySQL 7\n\n##### 下载并安装MySQL Yum Reposity\n\n\n```bash\nwget -i -c http://dev.mysql.com/get/mysql57-community-release-el7-10.noarch.rpm\n\nyum -y install mysql57-community-release-el7-10.noarch.rpm\n```\n\n##### 安装 MySQL\n\n```\nyum -y install mysql-community-server\n```\n\n安装过程需要一些时间，安装完成后，如下图所示：\n\n\n![QQ截图20180818153320.png](https://cdn.steemitimages.com/DQmTczxabXShoqFCCJq41aSPEJBmjaLKTjLxYpNAKpbSPzk/QQ%E6%88%AA%E5%9B%BE20180818153320.png)\n\n\n### 3. 配置 MySQL\n\n##### 启动 MySQL\n\n```\nsystemctl start  mysqld.service\n```\n\n##### 查看 MySQL 运行状态\n\n```\nsystemctl status mysqld.service\n```\n\n![QQ截图20180818204947.png](https://cdn.steemitimages.com/DQmX1P1J297pBK1aBnvrLkispMZa4DoZjKxU9UZSkdgFGpU/QQ%E6%88%AA%E5%9B%BE20180818204947.png)\n\n##### 获取 root 默认密码\n\n```\ngrep \"password\" /var/log/mysqld.log\n```\n\n![QQ截图20180818205257.png](https://cdn.steemitimages.com/DQmUqifyv3LB8uwJr2hUSy6HAYKSNDUqXx1T99ptHqNmPe2/QQ%E6%88%AA%E5%9B%BE20180818205257.png)\n\n##### 登录 MySQL\n\n```\nmysql -uroot -p\n```\n\n输入密码后，即可登录 MySQL，但是默认密码是不能做任何操作的，需要先修改密码。\n\n##### 修改默认密码\n\n```\nALTER USER 'root'@'localhost' IDENTIFIED BY 'new password';\n```\n\n### 4. 开启远程连接\n\n##### 创建用户\n\n```\nCREATE USER 'root'@'%' IDENTIFIED BY 'password';\n```\n\nhost是%的用户才可以远程登录，这里可以创建新的用户也可以将已有用户的host设置为%。\n\n##### 用户授权\n\n```\nGRANT ALL PRIVILEGES ON *.* TO 'root'%'@' WITH GRANT OPTION;\n\nFLUSH PRIVILEGES;\n```\n\n##### 配置防火墙\n\n如果经过上面的配置可以远程连接，这一步可以跳过。\n\nCentOS 7 使用的是 firewalld 防火墙，可以使用 firewall-cmd 命令行工具操作firewalld。\n\n查看防火墙状态\n\n```\nfirewall-cmd --state\n```\n\n查看开启的端口\n\n```\nfirewall-cmd --zone=public --list-ports\n```\n\n开启3306端口\n\n```\nfirewall-cmd --permanent --zone=public --add-port=3306/tcp\n\nfirewall-cmd --reload\n```\n\n检查是否生效\n\n```\niptables -L -n | grep 3306\n```\n\n![QQ截图20180818211732.png](https://cdn.steemitimages.com/DQmXvvd1oju7yc8ENgcy92QZtUcaLj5J9HLJEceHqfszmCa/QQ%E6%88%AA%E5%9B%BE20180818211732.png)\n\n\n\n至此，就可以顺利通过远程连接到 MySQL 了。",
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      "parent_author": "",
      "parent_permlink": "trading",
      "author": "bitming",
      "permlink": "rsi",
      "title": "RSI 指标计算",
      "body": "![](https://cdn.steemitimages.com/DQmYV5vxmN9SYAYpQHj7RZFpD2d5trvWrkry8Kf7A83M8yg/QQ%E6%88%AA%E5%9B%BE20180817015227.png)\n\n这篇文章不对 RSI 的用法，行情判断作介绍，仅仅是 RSI 的计算问题。\n\n网络上 RSI 的计算方法各种各样，参考的时候不免眼花缭乱，而且本来一些让人疑惑的地方直接略过了，我也是花费了不少时间理解。\n\n### 1. 需求\n\n\n假设有下面的价格序列：\n\n```\n[4.605,4.306,4.319,4.155,4.165,4.091,4.132]\n```\n\n\n计算 Period = 6 的 RSI 值。\n\n### 2. RSI 计算公式\n\n先来看一下 RSI 的计算公式\n\n```\n100 - 100 / ( 1 + RS )\n```\n\n其中 RS = n 天内涨幅的平均值 / n 天内跌幅的平均值\n\nn 天内涨幅的平均值用 au 表示，跌幅平均值用 ad 表示，可数学推导成下面的公式：\n\n```\n100 * au / ( au + ad )\n```\n\n变换后的公式，可以很清楚的理解 RSI意义，就是涨幅占涨跌幅的比重，值越大，表示在一个周期中涨幅比跌幅越大。\n\n### 3. 计算涨跌幅平均值\n\n根据计算公式，先来计算 au 和 ad 。\n\n将上面的价格序列变换成涨跌幅的序列，就是后面的价格减去前面的价格。\n\n```\n[-0.299,0.013,-0.164,0.01,-0.074,0.041]\n```\n\n因为计算的 Period 是6，因此至少包含7个价格数据，这样涨跌幅的序列才能计算均价。\n\n将上面的涨跌幅序列拆分成涨幅序列 u_list：\n\n```\n[0,0.013,0,0.01,0,0.041]\n```\n\n和跌幅序列 d_list：\n\n```\n[0.299,0,0.164,0,0.074,0]\n```\n\n涨幅序列中，如果是负值，则用0代替，反之，跌幅序列中，正值用0代替。\n\n有很多计算均值的方法：SMA,EMA,WMA,HMA等，也可以是自己实现的均线指标，最常用的是 SMA 和 EMA，下面是 SMA 的示例。\n\n```\nau = ( 0 + 0.013 + 0 + 0.01 + 0 + 0.041 ) / 6\nad = ( 0.299 + 0 + 0.164 + 0 + 0.074 + 0 ) / 6\n```\n\n这里可以根据需要套用不同的均线指标，如果套用的是 zero-lag 的指标， rsi 相应的也会减少滞后。\n\n### 4. 计算 RSI 值\n\n有了 au 和 ad 后，直接根据公式就可以求出 rsi 的值。\n\n上面 au = 0.01067，ad = 0.0895\n\n```\nrsi = 100 * 0.01067 / ( 0.01067 + 0.0895)\n```\n\nrsi = 10.6518918\n\n一个价格序列返回的也是 RSI 值的序列，上面的例子则是：\n\n```\n[null,null,null,null,null,null,10.6518918]\n```\n\n\n\n### 5. 解疑答惑\n\n##### a. 价格序列中，从第几个开始计算 rsi ？\n\n从 period + 1 开始计算。\n\n##### b.  如果 au = 0 且 ad = 0 ,rsi 的值是多少？\n\nau =0 且 ad = 0 说明在计算周期中没有涨跌，多空力量相当， rsi = 50。\n\n##### c. au =0 ，rsi 的值是多少？\n\nau =0 说明在计算周期中，一直跌，表示超卖，rsi =0，通过公式就可得出。\n\n##### d. ad =0，rsi 的值是多少？\n\nad =0 说明在计算周期中，一直涨，表示超买，rsi = 100。",
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