Use a loop to handle any number of command line parameters:. To use this feature, Command Extensions should be enabled. Some characters in the command line are ignored by batch files, depending on the DOS version, whether they are " escaped " or not, and often depending on their location in the command line:.
I know of several occasions where these seemingly useless "features" proved very handy. If you are working on a batch file script first time and you require to pass some value to a batch file at run time rather than hardcoding them into the file, then you will think it would not be easy. But believe me, it is easy very easy to pass parameter in batch file script.
In this article, I will explain how to pass parameters in the batch file script by command line arguments. Thus it increases to 2 on the 2nd pass through the loop, and to 3 on the 3rd pass. Thus the string echoed to the screen alters with each pass. When multiple variables are defined at the beginning of the batch, a short definition form may be used by employing a replacement string. It is possible to create a set of variables that can act similar to an array although they are not an actual array object by using spaces in the SET statement:.
It is also possible to declare your variable using indexes so you may retrieve specific information. This will create multiple variables, with the illusion of an array:. Note that in the example above, you cannot reference var without stating what the desired index is, because var does not exist in its own.
This example also uses setlocal enabledelayedexpansion in conjunction with the exclamation points at! You can view more information about this in the Variable Substitution Scope Documentation. By default, variables are global to your entire command prompt session.
The following example shows the difference when local and global variables are set in the script. If you have variables that would be used across batch files, then it is always preferable to use environment variables.
Following is an example of an output. Batch Script - Variables Advertisements.
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