attrib
命令用于更改文件属性,如隐藏、系统、只读和存档。
问题是,如果不另外清除或设置隐藏或系统状态,就无法更改隐藏或系统文件的只读状态。例如:
C:somewhere>REM Set up a hidden test file.
C:somewhere>echo foo > foo.txt
C:somewhere>attrib +h foo.txt
C:somewhere>REM Try to make the hidden test file read-only.
C:somewhere>attrib +r foo.txt
Not resetting hidden file - C:somewherefoo.txt
C:somewhere>REM We can make it read-only if we additionally clear the hidden status...
C:somewhere>attrib -h +r foo.txt
C:somewhere>REM (Revert that last change.)
C:somewhere>attrib +h -r foo.txt
C:somewhere>REM ...and we can make it read-only if we additionally make it hidden - which it already is.
C:somewhere>attrib +h +r foo.txt
C:somewhere>
(我假设系统属性的工作方式与上面相同,但我还没有测试。)
因此,attrib
可以用于此目的,但前提是批处理文件知道该文件是已经隐藏还是系统,然后可以将适当的+h
或+s
与+r
一起包含。
最好的方法是什么?
将隐藏属性和系统属性保存在变量中,必要时清除并重新应用。
用法:
call :setAttr "+r -a" "file"
call :setAttr +r "file"
call :setAttr -r "file"
功能:
:setAttr
:: Usage:
:: call :setAttr "+r -a" "file"
setlocal
for /f "delims=" %%a in ('attrib "%~2"') do set "attrs=%%a"
set "attrs=%attrs:~0,10%"
set toggle=
if not "%attrs:H=%"=="%attrs%" set toggle=-h
if not "%attrs:S=%"=="%attrs%" set toggle=%toggle% -s
if defined toggle attrib %toggle% "%~2"
attrib %~1 "%~2"
if defined toggle attrib %toggle:-=+% "%~2"
endlocal
exit /b