在Ubuntu中，有时候运用sudo apt-get install 安装软件时，会出现一下的情况
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E: Could not get lock /var/lib/dpkg/lock - open (11: Resource temporarily unavailable) E: Unable to lock the administration directory (/var/lib/dpkg/), is another process using it? |
主要是因为apt还在运行，此时的解决方案是
TLS 1.3 是最新的安全传输协议，目前已经被主流系统和浏览器支持了，主流网站（如 Google）也早已开启了 TLS 1.3 的支持。本文介绍如何在 Ubuntu 18.04 + Nginx 下开启 TLS 1.3 的支持。
首先升级至 Ubuntu 18.04.3，这是当前的最新版本。如果想要在 Nginx 下启用 TLS 1.3 的全部特性，包括 0-RTT，建议使用 Nginx 的最新 Stable PPA。
1. 查看CouchDB容器ID
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root@web-linux-16:/var/army$ docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES <strong>2df1a83c2c41</strong> couchdb:1.6.1 "tini -- /docker-ent…" 13 minutes ago Up 4 minutes 0.0.0.0:5984->5984/tcp myCouchDB |
2. 进入CouchDB容器
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root@web-linux-16:/var/army$ docker exec -it 2df1a83c2c41 bash root@2df1a83c2c41:/var/lib/couchdb# |
先查看当前系统时间
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root@ubuntu:/# date -R |
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root@ubuntu:/# tzselect |
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phoenix@nxtx-web-linux-75:/var/phoenix$ sudo apt install docker |
2. Docker Compose安装
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phoenix@nxtx-web-linux-75:/var/phoenix$ sudo apt install docker-compose |
3. 无法运行docker-compose，由于当前用户不在docker用户组，按照以下添加即可：
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phoenix@nxtx-web-linux-75:/var/phoenix$ docker-compose up ERROR: Couldn't connect to Docker daemon at http+docker://localunixsocket - is it running? If it's at a non-standard location, specify the URL with the DOCKER_HOST environment variable. phoenix@nxtx-web-linux-75:/var/phoenix$ sudo groupadd docker groupadd: group 'docker' already exists phoenix@nxtx-web-linux-75:/var/phoenix$ sudo gpasswd -a ${USER} docker Adding user phoenix to group docker phoenix@nxtx-web-linux-75:/var/phoenix$ sudo service docker restart phoenix@nxtx-web-linux-75:/var/phoenix$ newgrp - docker |
很多时候,我们需要应用第三方的jar包,但是这个jar包,在maven远程仓库里面没有,
比如我们要使用京东的sdk,但这个sdk在maven的远程仓库中没有,于是我们需要将这个jar包安装到我们本地仓库.
这里以安装京东的sdk为例,进行演示
京东的sdk包放在如下盘符里面:
Ubuntu16.04默认安装了Python2.7和3.5
请注意，系统自带的python千万不能卸载
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sudo add-apt-repository ppa:jonathonf/python-3.7 |
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sudo apt-get update sudo apt-get install python3.7 |
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sudo update-alternatives --install /usr/bin/python3 python3 /usr/bin/python3.5 1 sudo update-alternatives --install /usr/bin/python3 python3 /usr/bin/python3.7 2 |
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sudo update-alternatives --install /usr/bin/python python /usr/bin/python2 100 sudo update-alternatives --install /usr/bin/python python /usr/bin/python3 150 |
首先我们要创建一个.bat的文件，下面是创建删除几天前D盘backup目录下的文件
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@echo off echo Delete 3month ago files forfiles /p "E:\backup\pdf_files" /s /m *.pdf /d -90 /c "cmd /c del @path" forfiles /p "E:\backup\reportFile" /s /m *.pdf /d -90 /c "cmd /c del @path" forfiles /p "E:\backup\EmailFiles" /s /m *.pdf /d -90 /c "cmd /c del @path" forfiles /p "E:\backup\EmailFiles" /s /m *.txt /d -90 /c "cmd /c del @path" forfiles /p "E:\backup\pdf_files" /s /m *.pdf /d -90 /c "cmd /c del @path" forfiles /p "E:\backup\reportFile" /s /m *.pdf /d -90 /c "cmd /c del @path" forfiles /p "E:\backup\EmailFiles" /s /m *.pdf /d -90 /c "cmd /c del @path" forfiles /p "E:\backup\EmailFiles" /s /m *.txt /d -90 /c "cmd /c del @path" echo Deleting files, please waiting... |
将以上其中一行复制，新建.txt文本文件，粘贴并保存为.bat格式
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public class CorsFilter extends OncePerRequestFilter { static final String ORIGIN = "Origin"; protected void doFilterInternal( HttpServletRequest request, HttpServletResponse response, FilterChain filterChain) throws ServletException, IOException { String origin = request.getHeader(ORIGIN); response.setHeader("Access-Control-Allow-Origin", "*");//* or origin as u prefer response.setHeader("Access-Control-Allow-Credentials", "true"); response.setHeader("Access-Control-Allow-Methods", "PUT, POST, GET, OPTIONS, DELETE"); response.setHeader("Access-Control-Max-Age", "3600"); response.setHeader("Access-Control-Allow-Headers", "content-type, authorization"); if (request.getMethod().equals("OPTIONS")) response.setStatus(HttpServletResponse.SC_OK); else filterChain.doFilter(request, response); } } |
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@Bean public CorsFilter corsFilter() throws Exception { return new CorsFilter(); } http .addFilterBefore(corsFilter(), UsernamePasswordAuthenticationFilter.class) .addFilterBefore(authenticationTokenFilterBean(), UsernamePasswordAuthenticationFilter.class) .headers() .cacheControl(); |
