Why cannot transfer variable value?

Question

I have a batch script as follow:

setlocal enabledelayedexpansion
for /f "tokens=1,2 skip=3 delims= " %%a in (Instance_list.txt) do (
Set Intance_NAME=%%a
echo %Intance_NAME%

But The echo part is empty(Nothing).
Could you please tell me why and help me with this?

You have delayed expansion enabled but you are not referencing the variable correctly. You need to use exclamation points instead of percent symbols. — Squashman, May 25 '18 at 15:54

score 1 · Accepted Answer · answered May 25 '18 at 16:52

Couple of things:

You activate delayedexpansion but never use it (see the replacement of % in the last line with !

You also do not need to use `"delims= " on whitespace as whitespace are default delimiters in batch.

You did not close the loop with a closing (

@echo off
setlocal enabledelayedexpansion
for /f "tokens=1,2 skip=3" %%a in (Instance_list.txt) do (
Set Intance_NAME=%%a
echo !Intance_NAME!
)

and lastly, you do not really need delayedexpansion if you do not set the variable inside the loop, so you could also do:

@echo off
for /f "tokens=1,2 skip=3" %%a in (Instance_list.txt) do echo %%a

1 Answers1