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How to create a bat file that will execute a single command on all files with a particular extension.

I look for something like this which is there is linux for windows batch files

command *.extension

or even a way to loop through the file with extension would do.

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1 Answer

up vote 1 down vote accepted

If your command changes the filename and uses the same extension then this solution has a bug, and some files are processed more than once. There are ways around that.

@echo off
for %%a in (*.ext) do (
echo "%%a"
)
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@foxdrive what does %%a mean. Can you please explain –  C J Jun 9 at 4:35
1  
The for in do command uses a metavariable and I called it %%a. In the example above, each file that matches the *.ext filespec will be echoed in place of the %%a inside the double quotes. You could also use %%b and %%c and %%A and %%B and %%C etc and they are case sensitive. In other types of for in do loops you assign say %%a and then extra tokens are used in alphabetical ASCII order, which is why I use %%a and not %%? or %%# which you see some people using. When every file has been echo'ed then the loop above will finish. –  foxidrive Jun 9 at 9:06
 
thanks a lot. Its extremely difficult to understand when the linux pattern and windows pattern is so different –  C J Jun 9 at 11:36

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