DevHeads IoT Integration Server•6mo ago

Fixing 'Missing Operator' Error in Batch Script for Renaming JPG Files on Windows

I'm trying to rename image files (JPGs) on a Windows machine. I want to add an incrementing number (e.g., file1.jpg, file2.jpg, etc.) to each filename. I wrote a batch script using a loop, but I'm encountering a 'Missing operator' error. Here's the relevant part of the script:

setlocal EnableDelayedExpansion
set filename=file
set counter=0
for /f "usebackq delims=*" %i in (`dir /b *.jpg`) do (
    set /a counter+=1
    ren "%i" "%filename%!counter!.jpg"
)

setlocal EnableDelayedExpansion
set filename=file
set counter=0
for /f "usebackq delims=*" %i in (`dir /b *.jpg`) do (
    set /a counter+=1
    ren "%i" "%filename%!counter!.jpg"
)

Can anyone help identify the issue causing the error? @Middleware & OS

6 Replies

Dtynin•6mo ago

In batch scripting use double exclamation marks as in !! to expand your variables within arithmetic operations. Lemme give you a fix:

ren "%i" "%filename%%counter!!%.jpg"

ren "%i" "%filename%%counter!!%.jpg"

It's just syntax error @Sterling

Sterling•6mo ago

Okay, okay... Thanks very much @Dtynin

Enthernet Code•6mo ago

@Sterling The issue causing the Missing operator error is that when you're running the bash script in a command prompt window, you need to use double percent signs %% for the loop variable %i.

Sterling•6mo ago

Alright, I will take note of that. Thanks @Enthernet Code

Marvee Amasi•6mo ago

Yh something like this

setlocal EnableDelayedExpansion
set filename=file
set counter=0
for /f "usebackq delims=*" %%i in (`dir /b *.jpg`) do (
    set /a counter+=1
    ren "%%i" "%filename%!counter!.jpg"
)

setlocal EnableDelayedExpansion
set filename=file
set counter=0
for /f "usebackq delims=*" %%i in (`dir /b *.jpg`) do (
    set /a counter+=1
    ren "%%i" "%filename%!counter!.jpg"
)

youcef_ali•6mo ago

Select all the file you name in explorer put the header you want, it will be incremented auto

Gaming

Programming

Fixing 'Missing Operator' Error in Batch Script for Renaming JPG Files on Windows