dos | 易学教程

dos批处理命令详解

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一.简单批处理内部命令简介 1.Echo 命令打开回显或关闭请求回显功能，或显示消息。如果没有任何参数，echo 命令将显示当前回显设置。语法: echo [{on│off}] [message] Sample：@echo off / echo hello world 在实际应用中我们会把这条命令和重定向符号（也称为管道符号，一般用> >> ^）结合来实现输入一些命令到特定格式的文件中.这将在以后的例子中体现出来。 2.@ 命令表示不显示@后面的命令，在入侵过程中（例如使用批处理来格式化敌人的硬盘）自然不能让对方看到你使用的命令啦。 Sample：@echo off @echo Now initializing the program,please wait a minite... @format X: /q/u/autoset (format 这个命令是不可以使用/y这个参数的，可喜的是微软留了个autoset这个参数给我们，效果和/y是一样的。) 3.Goto 命令指定跳转到标签，找到标签后，程序将处理从下一行开始的命令。语法：goto label （label是参数，指定所要转向的批处理程序中的行。） Sample： if {%1}=={} goto noparms if {%2}=={} goto noparms（如果这里的if、%1、%2你不明白的话

rename file with progressive enumeration

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问题 I have a file called mycat.avi inside a folder VIDEO so that the path is c:\video\mycat.avi now I would like rename it so that the new re-name become start from C0700.mxf IF in folder c:\video is jet present another C0700.mxf -----> the file have to renamed C0701.mxf if in folder c:\video is jet present another C0701.mxf -----> the file have to renamed C0702.mxf if in folder c:\video is jet present another C0702.mxf -----> the file have to renamed C0703.mxf ... and so on Supposing mycat.avi

dos boot before win7 boot

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问题 I've got a question for dos & win7 boot process. Is it possible that dos boot and execute some dos-app before win7 boot without reboot? I mean boot process like win95 or win3.1. I'll explain more detail. dos boot -> execute some dos app -> cleanup memory -> load win7 volume boot record into memory 7c00 -> win7 boot without reboot Is this possible? 回答1: The scenario you have described is basically a warm reboot, interrupt 0x19 behaves almost like that, with the exception that it always loads

How to read keyboard input without “consuming” it in x86 DOS assembly?

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问题 I need to write a sort of key-logger function that can be called from C code. what it means is a c program would call an assembly function called startlog that would indicate to start logging the keys pressed until a function called endlog is called. the logging should work like this: write the ascii value of any key pressed without disturbing the C code between startlog and endlog, meaning that if the C code also needs to read the input (let's say by scanf, it would work ok). I managed to

DOS Batch File Variable Modifier Returns Blank

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问题 I have a DOS batch file that will create a report listing files contained within a folder tree. The code below produces the desired output for over 115,000 files. However, 13 records are produced with blank date/time and file size. When I manually execute the DIR command (without the /b option), the desired file information is presented. Can this be corrected without adding considerable workaround code? FOR /f "tokens=*" %%A IN ('DIR "<Path>" /a:-d /b /s') DO ( ECHO %%~tA %%~zA %%~dpA %%~nA %

Java小节

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Java学习记录 1. 常用DOS命令 Java语言的初学者，学习一些DOS命令，会非常有帮助。DOS是一个早期的操作系统，现在已经被 Windows系统取代对于我们开发人员，目前需要在DOS中完成一些事情，因此就需要掌握一些必要的命令。进入DOS操作窗口按下windows+R键盘，打开运行窗口，输入cmd回车，进入到DOS操作窗口。打开DOS命令行后，看到一个路径c:/user就表示我们现在操作的磁盘是c盘。常用命令：命令操作符号盘符切换命令盘符名: 查看当前文件夹 dir 进入文件夹命令 cd 文件夹名退出文件夹命令 cd… 退出到磁盘根目录 cd 清屏 cls 创定指定文件夹 type nul >文件夹名称删除目录 rd 文件夹名称删除带内容的目录（询问是否）rd /s 文件夹名称 Java语言特点简单性解释性面向对象高性能分布式处理多线程健壮性动态结构中立安全性开源跨平台 Java语言开发环境搭建 JVM：是虚拟机 JRE：是Java程序的运行时环境，包含JVM和运行时所需要的核心类库。 JDK：是Java程序开发工具包，包含JRE和开发人员使用的工具。为了开发方便，我们想在任意的目录下使用JDK的开发工具，则必须要配置环境变量，配置环境变量的意义在于告诉操作系统，我们使用的JDK开发工具在哪个目录下。文件资源管理器

Generating FAR jump instruction in 32-bit Open Watcom C

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问题 I need to generate a far jump instruction to jump to another ISR(Interrupt Service Routine). I'm developing a 32-bit FreeDOS application. After reading OW manuals(cguide.pdf and clr.pdf), I figured out two ways that compiled successfully w/o any warning or error . /* Code Snippet #1 */ #pragma aux old08 aborts ; void (__interrupt __far *old08)(void); // function pointer declaration void __interrupt __far new08(void) { /* Do some processing here ... */ (*old08)(); /* OW will now generate a

create loop in batch for multiple export with ImageMagick

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问题 Im trying to make a batch file that process multiple image files. The files are named P_1316_0001.png P_1316_0002.png P_1316_0003.png etc.. LETs sqy P_1316 is VARSESSION) thanks to the ImageMagick program i can convert an image directly with batch. Basically what i want to do is : Create a variable that would increment until there is no more file to convert in the folder. Comvert the file from png to jpg (convert %VARSESSION% %i%.png %VARSESSION% %i%.jpg) assuming that i is 0001 Well i hope

how to run a batch file using java

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问题 I want to run a batch file using a java program, when I double click the .bat file it asks me to enter 'D' and after that it creates some folders in C drive, below is the contents of the .bat file: xcopy "data" "C:\data" /S xcopy "rapid" "C:\rapid" /S subst x: /D subst x: C:\ My Java code is as below: try { //C:\Desktop\Speed\view_R36_WD_Release\RAPID\switchToLive.Bat String cmds[] = {"C:\\Users\\608521747\\Desktop\\Speed\\view_R36_WD_Release\\RAPID\\switchToDev.bat"}; Runtime runtime =

DOS Commands- Excluding files in a folder in xcopy

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问题 I have a folder containing many other sub-folders. I am trying to write a batch file which will copy some of the folders to another place on my hard disk. I am using "xcopy" for this. I am facing following problem: The folder structure is as shown below- --FolderB1 ---FolderB2 ---FolderB22 ---File1.txt ---File2.txt ---File3.txt I have some .txt files inside "FolderB1", along with "FolderB2" and "FolderB22" I want to copy "FolderB2" and "FolderB22" and skip ".txt" files contained in "Folder B1