echo.@.call.pause.rem(小技巧:用::代替rem)是批处理文件最常用的几个命令 echo 表示显示此命令后的字符  echo off 表示在此语句后所有运行的命令都不显示命令行本身  @与echo off相象,但它是加在每个命令行的最前面,表示运行时不显示这一行的命令行(只能影响当前行).  call 调用另一个批处理文件(如果不用call而直接调用别的批处理文件,那么执行完那个批处理文件后将无法返回当前文件并执行当前文件的后续命令).  pause 运行此句会暂停批处理的执…

which whereis locate find alias file ls cat echotar bzip2 gzip history mv cp rm --------------------------------------------------------------------------------------------------------------------------------------------------linux下的查找命令which,whereis…

With new users purchasing Delphi every single day, it’s not uncommon for me to meet users that are new to the Object Pascal language. One such new user contacted me recently with questions about reading and writing structured data to files on disk.In…

[20180316]理解db file parallel read等待事件.txt --//一直对db file parallel read等待事件不理解,因为在实际系统中很少遇到这样的等待事件. SCOTT@book> @ &r/ver1PORT_STRING                    VERSION        BANNER------------------------------ -------------- ------------------------------…

不想看废话的可以直接拉到最底看总结 废话开始: master: master主机存在文件,却报 执行spark-shell语句:  ./spark-shell  --master spark://master:7077 --executor-memory 1G --total-executor-cores 2 报错:WARN TaskSetManager: Lost task 1.0 in stage 0.0 (TID 1, slave02): java.io.FileNotFoundExcep…

Step 1: Check File/Folder Permissions The first step to fixing this issue is ensuring that the account you are using to run the script in Task Scheduler has Full Control permissions on the folder containing the script, the script itself, and any fold…

string str = File.ReadAllText(@"c:\temp\ascii.txt");…

         Python : 3.7.0          OS : Ubuntu 18.04.1 LTS         IDE : PyCharm 2018.2.4       Conda : 4.5.11    typesetting : Markdown   txt(utf-8) <道德经>原文 "我有三宝持而保之∶一曰慈,二曰俭,三曰不敢为天下先." 一曰慈, 二曰俭, 三曰不敢为天下先.   code """ @Author…

The problem is in you config file. You are mixing two concepts with some incorrect syntax. The <assembly... /> and <namespace ... /> nodes provide an assembly and namespace search order when your <register ... /> node contains a type tha…

今天无聊地写vuecli3听歌的时候,遇到了上传文件到Django的自我需求,然后就到vuetify的表单组件里找upload btn,发现居然没有!!! 顿时惊了个呆,要知道之前用element做操作系统课设的时候,还是挺全的. 这里偷偷吐槽,vuetify的alert真的丑...... 这里分享一个解决办法,挺简单的,网上好多办法都模棱两可,而且还有外国友人在npm发布了一个组件,名字我忘了,巨无敌难用. So,Today I am writing to share a simple app…