Batch: how to run http server in every drive path?

Question

This is a batch script to run httpserver in every drive path if drive exists to list its files. in this script set /a %port% is not working.

@echo off
set /a port=8080
for %%i in (c d e f g h i j k l m n o p q r s t u v w x y z) do if exist %%i: (
cd /d %%i:\
start SimpleHTTPServer.exe %port%
set /a port+=1
)

How about patching `SimpleHTTPServer.exe` to create `JustSlightlyMoreComplicatedHTTPServer.exe` that can actually serve multiple directories from one process. — Kaz, Jul 14 '16 at 03:50
Possible duplicate of [Windows Batch Variables Won't Set](http://stackoverflow.com/questions/9681863/windows-batch-variables-wont-set) — SomethingDark, Jul 14 '16 at 04:29
Also, -1 until you ask a more meaningful question than "why isn't it working?" — SomethingDark, Jul 14 '16 at 04:30
@Kaz `I was doing that in python but i was checking with batch first.exe` — Syed Danish Mehmood, Jul 14 '16 at 05:08

score 1 · Accepted Answer · answered Jul 14 '16 at 04:20

1

This has to do with how environment variables are expanded inside of blocks in a batch file. To override this behavior, use setlocal enabledelayedexpansion and use ! instead of % to reference the environment variable.

@echo off
setlocal enabledelayedexpansion
set /a port=8080
for %%i in (c d e f g h i j k l m n o p q r s t u v w x y z) do if exist %%i: (
cd /d %%i:\
start SimpleHTTPServer.exe !port!
set /a port+=1
)

answered Jul 14 '16 at 04:20

Anon Coward

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Thank you buddy, so nice of you! – Syed Danish Mehmood Jul 14 '16 at 05:03

Batch: how to run http server in every drive path?

1 Answers1