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Editor to share with you how to use bat to get the file size, I believe most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to know it!

Let's start with a simple sentence code:

For / f% I in ('dir / b c:\ 450010.jpg') do echo% ~ zi

Complete judgment code:

The code is as follows:

@ echo off

:: copy the following home page every 5 minutes

For / f% I in ('dir / b c:\ index2.htm') do (

Set indexdx=%%~zi

)

If% indexdx% gtr 5120 (

Echo y | xcopy c:\ index2.htm / d / r / k c:\ index.htm

)

Pause

Determine the file size under dos

I'm afraid it won't work under pure dos, but bat under window is just so-so, when c:\ 1.txt is greater than 3.999G. Check every about 20 seconds.

The code is as follows:

@ echo off&setlocal Enabledelayedexpansion

Set Runner:\ 1.txt

: 1

Ping-n 20 127.0 > nul

For / f "tokens=1-3 delims="% an in ('dir "% R%" ^ | find / I "1 file"') do (

Set QQ% c

Set / a Qizhuangqizhuo!

If! Q! Lss 2048start "1.exe"

)

Goto 1

The Dos script determines the file size

The code is as follows:

@ echo off & setlocal EnableDelayedExpansion

Del 1.txt / q

Del 2.txt / q

For% I in (*) do (echo% ~ fzi > > 1.txt) rem stores the file size to 1.txt

For / f "tokens=1* delims=" an in (1.txt) do (

Set "zer=%%a"

Set "pat=%%b"

If! zer! Gtr 5120 (

If not "! pat:~0,-1!" = = "% ~ 0" echo "! pat:~0,-1!" & echo "! pat!" > > 2.txt rem put file names greater than 5KB into 2.txt

)

)

Echo "done."

[remarks] judgment sentences commonly used in if

1. If exist d:\ test.txt (test.txt exists under echo D) else (test.txt does not exist under echo D)

2. If "abc" = = "xyz" (echo string abc equals string xyz) else (echo string abc is not equal to string xyz)

3. If 1 equ 2 (echo 1 equals 2) else (echo 1 is not equal to 2)

4. If defined str (the echo variable str has been assigned to% str%) else (the value of the echo variable str is empty)

Chinese meaning relation symbol English interpretation

Equal to equ equal

Greater than gtr greater than

Greater than or equal to geq greater than or equal

Less than lss less than

Less than or equal to leq less than or equal

Not equal to neq no equal

The above is all the contents of the article "how to use bat to get file size". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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