How to delete *.* excluding some extensions?

Question

I\'m trying to make a batch file on Windows for deleting all the files in the current directory but excluding 4 file extensions (log, sdb, SDK, bat).

I have tried th

Answer 1

• internal quotes must be escaped with \
• you probably want IF /I (case insensitive) option
• you should use @ISDIR to exclude directories
• DEL /Q option was after last quote, should be before last quote, but it isn't needed
• parentheses are not needed
• FORFILES /M option isn't needed since your mask is "all files"

This should work

@echo off
forfiles /c "cmd /c if @isdir equ FALSE if /i not @ext==\"sdb\" if /i not @ext==\"sbk\" if /i not @ext==\"log\" if /i not @ext==\"bat\" del @file"

But the above is very slow, and it sure is a lot to type.

The following is much simpler and faster.

@echo off
for /f "delims=" %%F in ('dir /b /a-d ^| findstr /vile ".sdb .sbk .log .bat"') do del "%%F"