Let's say I have 20,000 BAT files, and I want to execute them all in one shot. But instead of typing line after line: "Start/Call file1.bat...." "Start/Call file2.bat...." "Start/Call file3.bat...."

Is there a quicker way I can execute all 20,000 bat files with one command? If you wanted to execute all files in a folder in Linux, you would use the command: ./(path)/*

  • 3
    Consider using a pause or some sort of delay too if you have load issues on the machine running the 20k scripted processes. Jun 12, 2019 at 1:01
  • @PimpJuiceIT Is there a system out there that won't fall over with 20,000 jobs starting all at once? That's an awful lot of memory that will be demanded. Jun 12, 2019 at 3:21
  • 1
    The OP did not say they should start all at once - he said with one command. I imagine he would want them to run consecutively.
    – davidgo
    Jun 12, 2019 at 4:51

1 Answer 1


Running ./(path)/* won't work on Linux, either -- it will just run the first one and pass the rest of them as parameters to it. You need to use a loop.

On Linux that would be, e.g.:

for i in path/* ; do $i ; done

The equivalent on Windows batch is, if you run it on the commandline:

for %i in (path\*) do @call %i

Or if you put it inside a batch file:

for %%i in (path\*) do @call %%i

You will run into issues with the length of the command if you have 20,000 files, so you might need a different scheme for iterating over them. If they are all numbered sequentially, you could just iterate the numbers.

  • 2
    Using call or start tho for Windows batch scripts and maybe consider using some variable substitutions specifying the full path and batch script file names explicitly and double quoted. Jun 12, 2019 at 1:00
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    Regarding your last paragraph about "length of the command". Not sure what you mean. If you mean time to execute 20,000 files, yes that is a concern, but iterating numbers wouldn't make it any faster. If you mean the number of bytes in the command line, then no, that is not an issue.
    – dbenham
    Jun 12, 2019 at 14:13
  • @dbenham On Linux (bash) there is a limit to the length, as the file names are actually expanded into the command, but yes, on Windows it behaves differently.
    – vlumi
    Jun 12, 2019 at 23:51

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