Question

I am using windows , and I want to do a loop inside a bat and to break it when a condition is satisfied , and I dont want to use goto , can some one give me the general way to do it ?
in my case , I want to loop until a file size is bigger than 200 KB , so in my batch I create a file (that’s get bigger with time) , then I want to check it size with loop
if it greater than 200 KB I want to break loop

Answer 1

Unfortunately the batch scripting language doesn’t have while loops, only for loops with a predetermined amount of iterations, so I’m afraid that if+goto is your only option. Why are you determined to avoid goto statements in batch?

The following code resembles a common do-while loop:

:do_while_loop_start
rem This is the body of the loop (do something here...)

:do_while_loop_end
for /f "usebackq" %%a in ('somefile.txt') do set filesize=%%~za
if %filesize% leq 204800 goto do_while_loop_start

Isn’t it elegant enough? I think it is.