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DOS批处理 & 脚本技术（批处理室） » [Help] Problem changing extensions with FOR

Floor1　cyz678990	Posted 2010-04-08 22:47
新手上路　Posts 6　Credits 8
I first used FOR to rename .EXE to .EXE.BAK @echo off set pth=%cd% for /r "%pth%" %%a in (.EXE) do move /y "%%a" "%%a.BAK" Later I wanted to try changing them back, but I don't know what's wrong with the statement below. I kept looking it over again and again, but it's still not right. @echo off set pth=%cd% for /r "%pth%" %%a in (.BAK) do ( set file=%%a move /y "%%a" "%file:~0,-4%" ) Could some expert give me some pointers?

Floor2　Hanyeguxing	Posted 2010-04-08 23:07
银牌会员　Posts 897　Credits 1,039　From 在地狱中仰望天堂
@echo off setlocal enabledelayedexpansion set pth=%cd% for /r "%pth%" %%a in (*.BAK) do ( set file=%%a move /y "%%a" "!file:~0,-4!" ) You didn't use delayed variable expansion.