Description: This batch allows string substitution in a text file. It parses each line of a text file for a particular string and replaces it with another string. I.e. To replace all occurrences of 'Yellow Submarine' in 'color.txt' with 'uboot.How do I modify this: for /f %%a IN ('dir /b /s build\release\*.dll') do echo '%%a' to work when the path contains spaces? For example, if this is run from c:\my folder with spaces it will e. Navigating DOS For those who have never used a command line envornment, it can be a little confusing and frustraiting. But don't worry. It's still confusing and frustraiting for people who have been doing it for years. Start by using the DIR. The first command you need to learn to use DOS is simply how to get help. Unbelievably, with Windows 95, Microsoft stopped automatically loading the MS-DOS HELP facility when you install Windows. This is the most important. A batch file is a text file, with BAT as the extension, that contains DOS commands. The operating system executes each of the commands in the batch file if they are typed on separate lines. DOS Batch - File Examples. If you frequently find yourself calling FTP from the command line, each time having to login and. FTP modes, until you finally get where you want be in order to do some real. This little batch can connect to your FTP server and logs you in before it gives you the prompt. You can. easily add more FTP commands to it, like changing directories or switching to binary mode or whatever you. FTP prompt. The FTP connection information is embedded within the batch itself. The batch connects to an. FTP server by executing itself in FTP context using the FTP - s option. Once executing in FTP context. FTP commands listed in the file. By omitting the final FTP "bye" command it will stop. FTP prompt and wait for user input. Optionally a FTP script can be provided as input stream, that way multiple FTP scripts can share the same. Example. Ftp. Login. DDB: DOS Batch File Tutorial. BATCH FILE BASICS. Batch files make one a power user; becomingso allows a person to run circles aroundpoint & click friends and co- workers. Here are the Main Advantages. Using Batch Files. Fewer keystrokes required. Less chance of making. Short commands are. One command executes an extended. Decisions can be automatically made for the user. Major time savings. Skip Preliminary. DOS batch files. Simple code. After the tutorial will be links to example. Each. example will be explained as to what it accomplishes and what. An additional section of. I employ. for my own everyday computing purposes. This tutorial will. DOS exclusively, although Linux. Macintosh, OS/2, Unix and Windows users may also make some, if not. DOS batch files. However, users of those systems. DOS emulator will be required. Be aware though, that these emulators. DOS. It is assumed you. DOS command issuing, its file & directory. Realise that Doctor DOS will not be responsible for problemsencountered through the use or mis- use of anything presented here. The. Batch File. Tutorial. What is a batch file and why might I need one?"A batch file is a text file containing a series of commands that you. The most common uses are to start programs and to run. Batch files do that with one command instead of the multiple. They can be likened to shortcut icons as seen. Using a batch file to start a program often means that your path. This means fewer directories through which. DOS must search during its operations. Having a shorter path will also. Further, sophisticated batch files can improve upon program starting. Allowing lots. of lower memory means your programs have breathing room and there will. This same capability may be had at the. Why not let a batch file do the work for you? With one command, a batch file can start the program in the desired. This saves the user a search for that document and the. One simple command of the. This is similar to Window's "File Association" feature, but with more. In. fact, one could even have the same file loaded into different programs, each. The user never has to change. To reinforce: Once set up, these batch files. At the user's whim, the configuration, options and documents can be. DOS. Using a batch file to run a utility means being able to have direct access. If there are any often- used specific options, they can be included. Even better: Using a batch file means no possibility of. Batch files can also make decisions to perform. The most. sophisticated ones can even emulate commands not normally included with. DOS operating system. WHAT YOU'LL BE DOING: The first section, below, will help you to understand and then write. For those who are afraid of programming, this article. DOS batch files are a good place to. English commands for the. Thus, they are easier to comprehend, even for those of you whose. English. You may then move on to other sections which will show you to how improve. You'll also see. how to combine small batch files to do sequences of operations. On the Advanced Batch Files page, you'll be. These allow the file to function in different ways depending. On the other advanced pages. These permit. operations based on choices made by the user after the file is running. You may wish to rename the example files and perhaps use a different. Go ahead - this tutorial is just for basic learning. You may also see another use for a batch file if it had some. Be creative and try the changes; however, be aware that no. Doctor DOS for any problems encountered. I suggest that you always try out any batch file in a TEST directory. Copy some files there to try out the batch. If it works as you intend. If anything did go. TEST directory, it would only affect copies of files and not. GETTING STARTED. First realise that a batch file typicallytakes the following form: Get Ready to Use a Program or Utilityor to Perform a Task. Run the Program/Utility or do the Task. Verify, and/or Clean Up, and/or Restore. The first item above, means to give some initial instructions that. These might be to go to a specific directory, create or change an. This preparation stage might also include instructions for saving the. This is so that when the batch file. The next point in the list runs the program or utility as directed by. Finally, the last line means to display closing messages or a directory. It might delete temporary. DOS to. its default settings, or to the ones saved in the first step such. The. latter might be to deposit the user in some specific directory after the. What do I do first?"To begin, create a directory called "C: \BATCH" where you will place your. Some people use "C: \BAT", but that bothers me because there. For housekeeping and organisational purposes, I try. PATH STATEMENT. Next, modify your path statement as found in your "AUTOEXEC. BAT" file to. include this new directory. Use the text editor that came with DOS. I. suggest placing it near the start so that DOS will find and execute your. I have my "Batch" directory placed first right before the DOS. So the path statement might read in part. PATH=C: \BATCH; C: \DOS; and so on. It's also important that the. BATCH directory be before any program directories. This is because any. After saving this. AUTOEXEC" (or "C: \AUTOEXEC" if you are not on the `C'. ENTER". You may also reboot to initiate this change. After the AUTOEXEC. BAT completes, select a text editor to use in writing. You may employ the one you used above, but there are. The only thing required is that it be able to save these files in plain DOS. ASCII) text. This can be done by all text editors such as DOS' Edlin and. Edit, Windows Note/Wordpad, and a host of independent editors. Word. processors like Wordstar, Word. Perfect and MS Word also have the capability. ASCII (plain text). Type the files into your text editor as you see them here. DOS is not. case sensitive except in certain instances. These will be noted if. Otherwise, one may type all upper, all lower, or some. I prefer to use all- caps for this purpose, except for certain. Alternatively, you may. When finished, name the file as seen here or use some other name that. Be sure to stick to original DOS file- naming conventions of up to. BAT" extension so that DOS. Newer DOS versions allow. I don't recommend their use. Besides causing extra. DOS version, a long. Recalling the file- name conflicts I touched upon farther back, you should. Otherwise, whichever comes first during a DOS path. This is unless one is in the directory in. In that case, the current directory's file. There may be some cases where one wishes to use a batch. For programs. however, I do tend to use the same name as the given program's executable. This is not generally a problem because I have no. I am testing something related to that program. Finally, remember to place your new file into your "C: \BATCH" directory. Once you understand the basics, we'll discuss someimprovements to make the file do more things withthe same simple keyboard command. This techniquewill be followed throughout these lessons. YOUR FIRST BATCH FILE: Let's select a task that involves only a few steps. I use Word. Perfect a. Ordinarily, without a batch file, one. Word. Perfect. directory, and then issue the command to start Word. Perfect. A batch file. As you will see, each main line in the. I'll first show you the complete batch file and then explain what each. The following assumes that you are using Word. Perfect 6. 0 and. WP6. 0 directory on the `C' Drive. Change these. parameters, if they differ from your word processor and directory. Note that the indents shown for each example are to make them stand out. You don't need to indent the lines in the batch file itself. Indents made. by tabs or spaces after "ECHO OFF" are ignored by DOS during batch file. WP. bat. : : Runs Word. Perfect. @ECHO OFF. CD\WP6. 0. The first line is the batch file name. This is useful to remind. The second line is a. Note the use of twin colons. DOS will not execute any batch file line. After. seeing the second colon, DOS ignores anything following and goes to the next. That is because the colon is an illegal label character. With regards. to batch files, a DOS "label" is a word or a series of numbers/characters. Some people use a single colon to. DOS uses this to identify its labels. I suggest the single colon not be used, except. You'll see more on labels in the. Alternatively, others will use "REM" which is short for "Remark". DOS. does not execute these lines either, but it does read them, slowing things. This is not a problem with today's fast processors and hard drives. Regardless, my philosophy is that anything. I must mention there is also a problem with "REM" lines which contain. I won't get into here because it is beyond. I simply recommend the double colon as the best. Getting back to the example batch file, for the third line. I employ the double colons with the remainder of the line blank. It is. used as a separator between the title and the file itself. Although they. do not affect the running, or contribute to the mis- running, of the batch. DOS will display an unnecessary. ECHO OFF" command. The fourth line is required to tell DOS not to display the. DOS not. to show the line itself. The first command in typical batch files usually. ECHO OFF". "Echo" means that the keys struck on the keyboard are. Since a batch file is just a series of. DOS. executes each of those lines, just as though you were typing each. However, in most cases, the user is. DOS is doing. Using the "Echo Off" command means each command issued by. Again, if you wish even that line to be hidden, add. Next is a blank line. DOS ignores blank lines (if they occur. Echo Off" command), and executes the following line immediately. I insert such lines to separate the various steps the file does to complete. It makes no difference to the running of the file but. This is. important for lengthy, complicated files, especially if you go back into. The succeeding line tells DOS to go to the `C' drive. This is. important if you are on a floppy, CD- ROM, RAM, Flash, or another hard.
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