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The variables will remain defined with the data from the last line of the config.txt after the batch file ends. The FOR loop will then read the next line, and repeat the process. The FOR loop will read one line, assign data to variables, then you can process the variables. Use this method if you have multiple sets of data to work with. The * if used will assign the remainder of the line to an additional variable. The variable contains some data whose value may change during the course of program computation. Using of variables becomes inevitable in mathematical computations. Instead of a range, you can specify each token, ie tokens=1,3,5. Any programming or scripting languages require variable to store the data and access them whenever we need the value. The tokens=1-4* line must be adjusted to match the number of data items you want to use. Set _All the data for each iteration of the FOR loop must be on one line in the file, separated by commas (you can pick a different delimiter). If you need them to persist, you need to use the method 2 or 3, or remove the Setlocal and Endlocal lines AND enable Delayed environment variable expansion by starting the command prompt with cmd /V:ON or by editing the registry - see cmd /? for the registry valuesįor /F "tokens=1-4* delims=," %%A IN (%_InputFile2%) DO ( They will be deleted when the batch file ends. Number of variables is limited by memory (how many I don't know). The FOR loop just reads in the data, all processing must be done after the FOR loop ends. The caret must also be escaped, so use ^^ or ^! instead of ^ or !. The exclamation point ( !) must be "escaped" with a caret ( ^) or it will be ignored, as will everything after an ! until a " or another !.
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(carriage return/linefeed is delimiter) This means spaces and tabs are allowed. :: For testing only, delete when not neededĮndLocalThis assumes the data for each variable is on a separate line in config.txt.
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:: This line will display the variables just assigned ::This line is just in case n has been defined before the batch file is runįor /F "tokens=*" %%I IN (%_InputFile%) DO (