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+--- Thread: Convert long filename to short filename (8.3) using cmd.exe (/Thread-Convert-long-filename-to-short-filename-8-3-using-cmd-exe)
Convert long filename to short filename (8.3) using cmd.exe - duster152501 - 07-23-2023
I am trying to convert a long filename to a short filename (8.3) on Windows.
A batch-file with a command line argument works as intended:
*short.bat*:
@echo OFF
echo %~s1
calling `short.bat C:\Documents and Settings\User\NTUSER.DAT` returns ` C:\DOCUM~1\USER\NTUSER.DAT`
However, I don't like having an extra .bat-file for this. I would rather call `cmd.exe` with the whole command from a ruby script.
How can I do this?
As an intermediate step I tried to hardcode the path in the batch-file, but that does not work:
*short1.bat*:
@echo OFF
SET filename="C:\Documents and Settings\User\NTUSER.DAT"
echo %filename%
echo %~sfilename%
`echo %filename%` works, but `echo %~sfilename%` gives the following error:
The following usage of the path operator in batch-parameter
substitution is invalid: %~sfilename%
For valid formats type CALL /? or FOR /?
If *short1.bat* works, how can I convert this into a one-liner that can be called with `cmd.exe \c ...`?
There is another question (
[To see links please register here]
), however that one is specifically asking for the path of the current directory.RE: Convert long filename to short filename (8.3) using cmd.exe - custard877 - 07-23-2023
Replace the filename.txt to the filename you want to convert to 8.3
dir /x filename.txt
You will then have to split the result with whitespace as your delimiter (\s in regex).
Then the value with the ~ is your short filename. If your filename is short to begin with, then you won't find a string containing a ~.
RE: Convert long filename to short filename (8.3) using cmd.exe - tubulizations158677 - 07-23-2023
cmd /c for %A in ("C:\Documents and Settings\User\NTUSER.DAT") do @echo %~sA
RE: Convert long filename to short filename (8.3) using cmd.exe - oconnell302 - 07-23-2023
Here is an example that read in the registry the location of your "appdata\local" folder and convert it to short path:
cls
@echo off
cd /d "%~dp0"
chcp 65001 >nul
for /f "skip=1" %%a in ('"wmic useraccount where name='%USERNAME%' get sid"') do (
for %%b in (%%a) do set current_SID=%%b
)
set current_username=%USERNAME%
set current_userprofile=%USERPROFILE%
set key_to_read=HKEY_USERS\%current_SID%\Software\Microsoft\Windows\CurrentVersion\Explorer\User Shell Folders
set value_to_read=Local AppData
rem If value_to_read contains ? space(s) set tokens to 2+?
for /f "usebackq eol= tokens=3,* delims= " %%a in (`reg query "%key_to_read%" /v "%value_to_read%" 2^>nul ^| find "%value_to_read%"`) do (
set value_type=%%a
set data_read=%%b
)
set data_read=%data_read:USERPROFILE=current_userprofile%
call set "data_read=%data_read%"
set current_local_appdata=%data_read%
set current_local_appdata_temp=%current_local_appdata%\Temp
echo %current_local_appdata_temp%
for %%a in ("%current_local_appdata_temp%") do set "current_local_appdata_temp_short=%%~sa"
echo %current_local_appdata_temp_short%
pause
exit