How can I check the size of a file in a Windows batch script

Question

I want to have a batch file which checks what the filesize is of a file   If it is bigger than  somany  kbytes  it should redirect with GOTO to somewhere else   Example    check for filesize  IF  file   filesize thing Bigger than  GOTO No echo Great  Your filesize is smaller than  somany  kbytes  pause exit  no echo Um    You have a big filesize  pause exit

User · Answer

This was my solution for evaluating file sizes without using VB/perl/etc. and sticking with native windows shell commands:

FOR /F "tokens=4 delims= " %%i in ('dir /-C %temp% ^| find /i "filename.txt"') do (  
    IF %%i GTR 1000000 (  
        echo filename.txt filesize is greater than 1000000  
    ) ELSE (  
        echo filename.txt filesize is less than 1000000  
    )
)

Not the cleanest solution, but it gets the job done.

User · Answer

As usual  VBScript is available for you to use       Set objFS   CreateObject  Scripting FileSystemObject   Set wshArgs   WScript Arguments strFile   wshArgs 0  WScript Echo objFS GetFile strFile  Size  amp    bytes    Save as filesize vbs and enter on the command-line   C  test gt cscript  nologo filesize vbs file txt 79 bytes   Use a for loop  in batch  to get the return result

User · Answer

If your  file  is an input parameter  you may use   zN  where N is the number of the parameter   E g  a test bat containing   echo   z1   Will display the size of the first parameter  so if you use  test myFile txt  it will display the size of the corresponding file

User · Answer

Create a one line batch file GetFileSize bat containing  GetFileSize   z1   then call it  call GetFileSize  myfile txt if   GetFileSize            goto No File if   GetFileSize      0     goto No Data if   GetFileSize  GTR 1000  goto Too Much Data rem Etc    You can even create your test file on the fly to eliminate the pesky required file  note the double percent in the echo statement   echo set GetFileSize    z1  gt   temp  GetFileSize bat call  temp  GetFileSize  myfile txt if   GetFileSize  GTR 1000  goto Too Much Data rem etc   This latter solution is antispaghetti   So nice   However  more disk writes   Check use count

User · Answer

Important to note is the INT32 limit of Batch   Invalid number   Numbers are limited to 32-bits of precision    Try the following statements   IF 2147483647 GTR 2147483646 echo A is greater than B  will be TRUE  IF 2147483648 GTR 2147483647 echo A is greater than B  will be FALSE     Any number greater than the max INT32 value will BREAK THE SCRIPT  Seeing as filesize is measured in bytes  the scripts will support a maximum filesize of about 255 9999997615814 MB

User · Answer

I prefer to use a DOS function   Feels cleaner to me   SET SIZELIMIT 1000 CALL  FileSize  1 FileSize IF  FileSize  GTR  SIZELIMIT  Echo Large file  GOTO  EOF   FileSize SET   2   z1  GOTO  EOF

User · Answer

I like  Anders answer because the explanation of the   z1 secret sauce  However  as pointed out  that only works when the filename is passed as the first parameter to the batch file    Anders worked around this by using FOR  which  is a great 1-liner fix to the problem  but  it s somewhat harder to read   Instead  we can go back to a simpler answer with   z1 by using CALL  If you have a filename stored in an environment variable it will become  1 if you use it as a parameter to a routine in your batch file    echo off setlocal set file test cmd set maxbytesize 1000  call  setsize  file   if  size  lss  maxbytesize        echo File is less than  maxbytesize  bytes   else       echo File is greater than or equal  maxbytesize  bytes   goto  eof   setsize set size   z1 goto  eof   I ve been curious about J  Bouvrie s concern regarding 32-bit limitations  It appears he is talking about an issue with using LSS not on the filesize logic itself  To deal with J  Bouvrie s concern  I ve rewritten the solution to use a padded string comparison    echo on setlocal set file test cmd set maxbytesize 1000  call  setsize  file   set checksize 00000000000000000000 size  set checkmaxbytesize 00000000000000000000 maxbytesize  if   checksize  -20   lss   checkmaxbytesize  -20         echo File is less than  maxbytesize  bytes   else       echo File is greater than or equal  maxbytesize  bytes   goto  eof   setsize set size   z1 goto  eof

User · Answer

You ll need two things  filesize bat    echo off echo   z1  And then what you re actually trying to size up  Copy a file only if it s larger than zero   copy only a non-zero file for  f  i in   filesize filesize bat   do set z  i if  z  gtr 0   copy filesize bat noodles bat    I found this thread and it was almost what I needed  I tried a bunch of different things - this was mildly frustrating because robocopy looked to have  min 1 but got ALL bunged up because I wanted to rename the file in transit which made me have to use       batch script

User · Answer

After a few  try and test  iterations I ve found a way  still not present here  to get size of file in cycle variable  not a command line parameter    for   i in    txt  do       echo    z i

User · Answer

If the file name is used as a parameter to the batch file  all you need is   z1  1 means first parameter   If the file name is not a parameter  you can do something like    echo off setlocal set file  test cmd  set maxbytesize 1000  FOR  F  usebackq    A IN    file    DO set size    zA  if  size  LSS  maxbytesize        echo File is   lt   maxbytesize  bytes   ELSE       echo File is   gt    maxbytesize  bytes

User · Answer

Just an idea   You may get the filesize by running command  dir     gt dir thing   Then again it returns so many things   Maybe you can get it from there if you look for it   But I am not sure

User · Answer

Just saw this old question looking to see if Windows had something built in   The  z thing is something I didn t know about  but not applicable for me   I ended up with a Perl one-liner    echo off  set yourfile output txt set maxsize 10000  perl -e  -s  ENV yourfile   gt   ENV maxsize    exit 1   exit 0  rem if  errorlevel   equ 1  goto abort if errorlevel 1 goto abort  echo OK  exit  b 0   abort echo Bad  exit  b 1

User · Answer

z1 expands to the size of the first argument to the batch file  See  C   gt  call      and  C   gt  if      Simple example    ECHO OFF SET SIZELIMIT 1000 SET FILESIZE   z1  IF  FILESIZE  GTR  SIZELIMIT  Goto No  ECHO Great  Your filesize is smaller than  SIZELIMIT  kbytes  PAUSE GOTO  EOF   No ECHO Um     You have a big filesize  PAUSE GOTO  EOF

User · Answer

Another example    FOR  I in  file1 txt  do  ECHO   zI

[batch-file] How can I check the size of a file in a Windows batch script?

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