How can i write a for loop in bat and execute a command on each iteration

Question

I want to accomplish the following in a bat script

I want to create an array, in which the elements are separated by space, for instance:

array = host1 host2 host3

And run a for loop on that array where each element is passed as a parameter to a command for instance: psexec //host1 cmd likewise all the server names should be passed as an argument.

How can I achieve this?

What have you tried, and how has what you've tried failed? Ideally, you should provide a [Minimal, Complete, and Verifiable Example](https://stackoverflow.com/help/mcve) of what you've tried, and include specific information on how it failed, with error messages and/or erroneous output. SO is not a code-writing service; the best questions are those which provide useful information so that those who answer can guide you to devising your own correct answer. See [How to Ask a Good Question](https://stackoverflow.com/help/how-to-ask). — Jeff Zeitlin, Jun 22 '17 at 12:39
Your data is not an _array_, but a _list_. Further details at [this answer](https://stackoverflow.com/questions/17605767/create-list-or-arrays-in-windows-batch/17606350#17606350) — Aacini, Jun 22 '17 at 13:11

score 2 · Accepted Answer · answered Jun 22 '17 at 13:03

2

You can try it with a list like below:

@echo off 
set list=host1 host2 host3
(for %%a in (%list%) do ( 
   ;dosomething with %%a;
))

Please be aware when setting the list and do not put any spaces before and after =

answered Jun 22 '17 at 13:03

Alex Lucaci

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score 1 · Answer 2 · answered Jun 22 '17 at 12:40

1

for %%a in (%array%) do echo %%a

for use directly on commandline, replace every %%a with %a.

answered Jun 22 '17 at 12:40

Stephan

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In the place of echo can i write psexec command and echo it to a txt file – ninja Jun 22 '17 at 12:45
2

of course - why not? You can do with `%%a` whatever you want. – Stephan Jun 22 '17 at 13:19

How can i write a for loop in bat and execute a command on each iteration

2 Answers2