Variable in dos batch file

The SET command with no arguments will list all variables for the current command prompt session. By default, variables are global to your entire command prompt session. This example demonstrates changing an existing variable named foo within a script named HelloWorld. There are a few special situations where variables work a bit differently. There is also a variable syntax using! This is a special type of situation called delayed expansion. You can read the command line arguments passed to your script using a special syntax.

The zero ordinal argument is the name of the batch file itself. NOTE: DOS does support more than 9 command line arguments, however, you cannot directly read the 10th argument of higher. You will learn how to process a large number of arguments in a loop later in this series.

Brian Nixon Brian Nixon 8, 1 1 gold badge 16 16 silver badges 24 24 bronze badges. Is that a typo? So this is what MS came with — Falaque. Are there any downsides for the last syntax? Wolf - No, there is no downside. However, there is a limit to when it is most effective. As long as the value does not contain quotes, then almost any characters can appear in the value without worrying about escaping. Is this the only way of using local-variables in batch scripts?

Wolf, you only have to ensure that the command extensions are enabled, but this is the default configuration anyway Philip Philip 3 3 silver badges 12 12 bronze badges. But even then, it doesn't match the question anymore — jeb. The Overflow Blog. Stack Gives Back Safety in numbers: crowdsourcing data on nefarious IP addresses. Featured on Meta. Active Oldest Votes.

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