<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[千里之行始于足下]]></title><description><![CDATA[学而不思则罔，思而不学则殆]]></description><link>https://blog.youkuaiyun.com/hr787753</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; hr787753]]></copyright><item><title><![CDATA[Kafka查看最大偏移量（总消息个数）]]></title><link>https://blog.youkuaiyun.com/hr787753/article/details/104703116</link><guid>https://blog.youkuaiyun.com/hr787753/article/details/104703116</guid><author>hr787753</author><pubDate>Fri, 06 Mar 2020 20:02:13 +0800</pubDate><description><![CDATA[bin/kafka-run-class.sh kafka.tools.GetOffsetShell  --broker-list 127.0.0.1:9092 --topic Worm --time -1

]]></description><category></category></item><item><title><![CDATA[bash: /bin/rm: 参数列表过长]]></title><link>https://blog.youkuaiyun.com/hr787753/article/details/104355231</link><guid>https://blog.youkuaiyun.com/hr787753/article/details/104355231</guid><author>hr787753</author><pubDate>Mon, 17 Feb 2020 11:35:27 +0800</pubDate><description><![CDATA[find /tmp -name “tomcat*” | xargs rm -rf

]]></description><category></category></item><item><title><![CDATA[虚拟机重启网卡没有正常启动]]></title><link>https://blog.youkuaiyun.com/hr787753/article/details/102621260</link><guid>https://blog.youkuaiyun.com/hr787753/article/details/102621260</guid><author>hr787753</author><pubDate>Fri, 18 Oct 2019 10:54:15 +0800</pubDate><description><![CDATA[遇到了一个很奇怪的问题。虚拟机运行了一段时间关机重启之后访问不通了，
查看 ip addr 发现ip没了 于是我重启防火墙systemctl restart network 失败了，报了一堆异常
最后解决方案：
我关闭了 networkManager
重启网卡  重启虚拟机 就解决了
虽然暂时还不知道什么原因 ，先记录一下解决方案：
systemctl stop  NetworkManager
s...]]></description><category></category></item><item><title><![CDATA[Linux的一些进程操作]]></title><link>https://blog.youkuaiyun.com/hr787753/article/details/100879596</link><guid>https://blog.youkuaiyun.com/hr787753/article/details/100879596</guid><author>hr787753</author><pubDate>Mon, 16 Sep 2019 10:31:56 +0800</pubDate><description><![CDATA[启动脚本前 首先要判断进程是否存在，如果不存在 则不启动
首先判断进程数量
count=ps -ef | grep XX进程 | grep -v "grep" | wc -l
#如果进程数量大于0 则不启动
if [ $count -gt 0 ]; then
echo $count
echo ‘process is  running, do nothing’
exit
fi
否则 启动
…

...]]></description><category></category></item><item><title><![CDATA[内网地址段]]></title><link>https://blog.youkuaiyun.com/hr787753/article/details/97779389</link><guid>https://blog.youkuaiyun.com/hr787753/article/details/97779389</guid><author>hr787753</author><pubDate>Tue, 30 Jul 2019 14:15:20 +0800</pubDate><description><![CDATA[大学 在学计算机网络没有好好学  现在补上
内网段：
10.0.0.0/8：10.0.0.0～10.255.255.255
172.16.0.0/12：172.16.0.0～172.31.255.255
192.168.0.0/16：192.168.0.0～192.168.255.255

...]]></description><category></category></item><item><title><![CDATA[Python发送接收(UDP)数据]]></title><link>https://blog.youkuaiyun.com/hr787753/article/details/96879186</link><guid>https://blog.youkuaiyun.com/hr787753/article/details/96879186</guid><author>hr787753</author><pubDate>Mon, 22 Jul 2019 17:48:19 +0800</pubDate><description><![CDATA[s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
s.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1)
PORT = 514
network = ‘xxxxx’
s.sendto(’{namehr1234}’.encode(‘utf-8’), (network, PORT))

...]]></description><category></category></item><item><title><![CDATA[TcpDump抓包]]></title><link>https://blog.youkuaiyun.com/hr787753/article/details/96878220</link><guid>https://blog.youkuaiyun.com/hr787753/article/details/96878220</guid><author>hr787753</author><pubDate>Mon, 22 Jul 2019 17:40:13 +0800</pubDate><description><![CDATA[tcpdump -i ens6f0  host 10.74.155.76 and port 20514 -vv -n -tttt
加条件 在后面加and
单独总结tcpdump抓包的常用命令
主要语法
过滤主机/IP：
tcpdump -i eth1 host 172.16.7.206
抓取所有经过网卡1，目的IP为172.16.7.206的网络数据
过滤端口：
tcpdump -i eth1 d...]]></description><category></category></item><item><title><![CDATA[离线部署docker]]></title><link>https://blog.youkuaiyun.com/hr787753/article/details/93098329</link><guid>https://blog.youkuaiyun.com/hr787753/article/details/93098329</guid><author>hr787753</author><pubDate>Thu, 20 Jun 2019 19:04:34 +0800</pubDate><description><![CDATA[Linux下离线安装Docker
一、基础环境
1、操作系统：CentOS 7.3
2、Docker版本：18.06.1 官方下载地址（打不开可能需要***）
3、百度云Docker 18.06.1地址：https://pan.baidu.com/s/1YdN9z72QutPkHBfLq06H1A 密码：dvvh
4、官方参考文档：https://docs.docker.com/install/l...]]></description><category></category></item><item><title><![CDATA[Maven打包带依赖]]></title><link>https://blog.youkuaiyun.com/hr787753/article/details/91997116</link><guid>https://blog.youkuaiyun.com/hr787753/article/details/91997116</guid><author>hr787753</author><pubDate>Fri, 14 Jun 2019 18:54:24 +0800</pubDate><description><![CDATA[之前总是 打出的jar 不带依赖 然后 找半天 索性写在这里记下来
&lt;build&gt;
    &lt;plugins&gt;
      &lt;plugin&gt;
        &lt;groupId&gt;org.apache.maven.plugins&lt;/groupId&gt;
        &lt;artifactId&gt;maven-compiler-plugin...]]></description><category></category></item><item><title><![CDATA[Docker的一些命令]]></title><link>https://blog.youkuaiyun.com/hr787753/article/details/88417893</link><guid>https://blog.youkuaiyun.com/hr787753/article/details/88417893</guid><author>hr787753</author><pubDate>Tue, 12 Mar 2019 11:49:10 +0800</pubDate><description><![CDATA[1.拉取镜像
 docker pull

2.查询本地的镜像
docker images

3.删除镜像
docker rmi  镜像id

4.搜索镜像
docker search 搜索的镜像名称

5.查看本地正在运行容器
docker ps

6.查看本地所有容器
docker ps -a

7.创建并运行容器
docker  run  -itd  --name  &amp;quot;my_os2&amp;quot;   -p...]]></description><category></category></item><item><title><![CDATA[N个线程按照顺序执行的两个方案]]></title><link>https://blog.youkuaiyun.com/hr787753/article/details/87713222</link><guid>https://blog.youkuaiyun.com/hr787753/article/details/87713222</guid><author>hr787753</author><pubDate>Tue, 19 Feb 2019 15:43:19 +0800</pubDate><description><![CDATA[
通过join的方式
通过CountDownLatch的方式


]]></description><category></category></item><item><title><![CDATA[MVN打包包含依赖和主类]]></title><link>https://blog.youkuaiyun.com/hr787753/article/details/84973943</link><guid>https://blog.youkuaiyun.com/hr787753/article/details/84973943</guid><author>hr787753</author><pubDate>Wed, 12 Dec 2018 15:38:02 +0800</pubDate><description><![CDATA[  &amp;lt;plugin&amp;gt;
        &amp;lt;artifactId&amp;gt;maven-assembly-plugin&amp;lt;/artifactId&amp;gt;
        &amp;lt;configuration&amp;gt;
          &amp;lt;!--这部分可有可无,加上的话则直接生成可运行jar包--&amp;gt;
          &amp;lt;archive&amp;gt;
          &amp;l...]]></description><category></category></item><item><title><![CDATA[LeetCode给定一个字符串，找出不含有重复字符的最长子串的长度。]]></title><link>https://blog.youkuaiyun.com/hr787753/article/details/82878602</link><guid>https://blog.youkuaiyun.com/hr787753/article/details/82878602</guid><author>hr787753</author><pubDate>Fri, 28 Sep 2018 11:24:17 +0800</pubDate><description><![CDATA[我的代码：
运行结果 超出了时间限制  时间复杂度为0（n^3）
class Solution {
    public int lengthOfLongestSubstring(String s) {
        int max =0;
        if (s.length()==1) return 1;
        for(int i =0;i&amp;lt;s.length()-1;i+...]]></description><category></category></item><item><title><![CDATA[Python开发环境]]></title><link>https://blog.youkuaiyun.com/hr787753/article/details/82788701</link><guid>https://blog.youkuaiyun.com/hr787753/article/details/82788701</guid><author>hr787753</author><pubDate>Thu, 20 Sep 2018 15:52:39 +0800</pubDate><description><![CDATA[新买了一个阿里云服务，上面还没有任何应用软件。
刚装了JDK，现在把python的一些环境装一装
1  安装虚拟环境
pip install virtualenv
virtualenv develop-env

2 nginx的安装

...]]></description><category></category></item><item><title><![CDATA[Linux 开机自启，alias，软链接，centos7防火墙]]></title><link>https://blog.youkuaiyun.com/hr787753/article/details/82747444</link><guid>https://blog.youkuaiyun.com/hr787753/article/details/82747444</guid><author>hr787753</author><pubDate>Mon, 17 Sep 2018 19:15:03 +0800</pubDate><description><![CDATA[1   linux的开机自启 
    编辑/etc/rc.d/rc.local 文件 
     加入自己的脚本 或命令

比如 
     sh /opt/work/search/es/bin/service.sh start &amp;amp;amp;

2   alias  一直生效

vim ~/.bashrc文件

加上一行  alias cdx=’cd /某个目录’ 
‘.bash_profile’...]]></description><category></category></item><item><title><![CDATA[ElasticSearch DSL查询语句]]></title><link>https://blog.youkuaiyun.com/hr787753/article/details/82744370</link><guid>https://blog.youkuaiyun.com/hr787753/article/details/82744370</guid><author>hr787753</author><pubDate>Mon, 17 Sep 2018 16:10:36 +0800</pubDate><description><![CDATA[1  match_all  匹配所有查询

{
  &quot;query&quot;: {
    &quot;match_all&quot;: {}
  }
}

2   match  匹配 分词

{
  &quot;query&quot;: {
    &quot;match&quot;: {
      &quot;ip_category&quot;: 6
    }
  }
}

3  multi_match多值匹配



{
  &quot;query&quot;: {
    &quot;m]]></description><category></category></item><item><title><![CDATA[使用Future和Callable创建线程]]></title><link>https://blog.youkuaiyun.com/hr787753/article/details/82186881</link><guid>https://blog.youkuaiyun.com/hr787753/article/details/82186881</guid><author>hr787753</author><pubDate>Wed, 29 Aug 2018 17:00:31 +0800</pubDate><description><![CDATA[创建线程还可以使用 Future和Callabe来创建线程。

Future就是对于具体的Runnable或者Callable任务的执行结果进行取消、查询是否完成、获取结果。必要时可以通过get方法获取执行结果，该方法会阻塞直到任务返回结果。

　　Future类位于java.util.concurrent包下，它是一个接口：



public interface Future&amp;lt;V&amp;gt;...]]></description><category></category></item><item><title><![CDATA[设计模式（一）简单工厂设计模式]]></title><link>https://blog.youkuaiyun.com/hr787753/article/details/82180861</link><guid>https://blog.youkuaiyun.com/hr787753/article/details/82180861</guid><author>hr787753</author><pubDate>Wed, 29 Aug 2018 11:38:37 +0800</pubDate><description><![CDATA[此设计模式为创造型 设计模式  
主要涉及到 要创建的对象 都具有相同的特性 。 
优点： 
 1、一个调用者想创建一个对象，只要知道其名称就可以了。 2、扩展性高，如果想增加一个产品，只要扩展一个工厂类就可以。 3、屏蔽产品的具体实现，调用者只关心产品的接口。

应用实例： 
1、您需要一辆汽车，可以直接从工厂里面提货，而不用去管这辆汽车是怎么做出来的，以及这个汽车里面的具体实现。 2、Hibe...]]></description><category></category></item><item><title><![CDATA[安装Oracle 11g数据库]]></title><link>https://blog.youkuaiyun.com/hr787753/article/details/81457920</link><guid>https://blog.youkuaiyun.com/hr787753/article/details/81457920</guid><author>hr787753</author><pubDate>Mon, 06 Aug 2018 17:25:01 +0800</pubDate><description><![CDATA[原博客网址：https://www.cnblogs.com/bingo1024/p/9008483.html#_label0

一、CentOS7.2静默安装Oracle11G 
1.#查看系统性能参数

cat /etc/sysctl.conf　

2.#查看安装包



rpm -qa |grep -E 'EMC|Ultra|multipath'　

3.#安装依赖包



yum -y in...]]></description><category></category></item><item><title><![CDATA[Git远程新建分支之后，本地看不到最新分支]]></title><link>https://blog.youkuaiyun.com/hr787753/article/details/81112818</link><guid>https://blog.youkuaiyun.com/hr787753/article/details/81112818</guid><author>hr787753</author><pubDate>Thu, 19 Jul 2018 11:46:40 +0800</pubDate><description><![CDATA[git remote update origin –prune]]></description><category></category></item></channel></rss>