Assign variables in batch script

Question

I'm new in Windows batch programming and I have found problems in the variable assignment. This is my code:

@echo off
setlocal enabledelayedexpansion
set Video=1
set FILEMEDIA=outputMedia.txt
for /f %%a in (%FILEMEDIA%) do (
    set /a Video=%Video%+1
    @echo Video
    set file=%%a
    @echo file
)

If FILEMEDIA has two lines I would like to obtain Video=2 and the line in file variable. However, at the end I obtain Video=1 and an error when I tried to print file (echo is off).

Community · Accepted Answer · 2017-05-23 12:20:28Z

1

Some kind of duplicate with How do I increment a DOS variable in a FOR /F loop?

Variables that should be delay expanded are referenced with !VARIABLE! instead of %VARIABLE%.

@echo off
setlocal enabledelayedexpansion
set Video=1
set FILEMEDIA=outputMedia.txt
for /f %%a in (%FILEMEDIA%) do (
    set /a Video+=1
    @echo !Video!
    set file=%%a
    @echo file
)
endlocal

edited May 23, 2017 at 12:20

CommunityBot

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answered Mar 2, 2015 at 9:09

Rubik

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1 Comment

JosefZ Over a year ago

Maybe @echo !file! instead of @echo file

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