How to check in command-line if a given file or di

2019-01-03 02:32发布

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I need to know that before any attempt to do anything with such file.

8条回答
甜甜的少女心
2楼-- · 2019-01-03 03:14

Incidentally, dbenham's solution also seems to be an effective way to find out if a process is running. It was the best solution I found for the following application:

start /b "job1.exe >> job1.out"
start /b /wait "job2.exe >> job2.out"   

::wait for job1 to finish using dbenham's code to check if job1.out is in use

comparejobs.exe
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霸刀☆藐视天下
3楼-- · 2019-01-03 03:15

If you download and install the Windows Server 2003 Resource Kit Tools there is a utility called oh.exe that will list open file handles for a given file:

http://www.microsoft.com/en-us/download/details.aspx?id=17657

Once you install it, reboot your machine and you'll be able to use the utility. You can see all the options in the Help and Support center as well as by typing oh /? in the command prompt.

(Info from : http://windowsxp.mvps.org/processlock.htm )

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男人必须洒脱
4楼-- · 2019-01-03 03:15

Just i want to share with you an example of my script based on @dbenham's trick

Description of this script : Check_Locked_Files.bat : This script can scan and check for locked files on a set of folders that can be modified into the script; for example, i have chosen those set of folders to be scanned :

Set Folders=^
^ "%ProgramData%\Microsoft\Windows\Start Menu\Programs\Startup"^
^ "%UserProfile%\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup"^
^ "%ProgramFiles%\Internet Explorer"^
^ "%ProgramFiles%\Skype"^
^ "%ProgramFiles%\TeamViewer"^
^ "%WinDir%\system32\drivers"^
^ "%Temp%"

The output result is in HTML format for more readability.

If the file is locked we show it in red color otherwise we show it in green color.

And the whole script is : Check_Locked_Files.bat

@echo off
Rem This source is inspired from here
Rem hxxps://stackoverflow.com/questions/
Rem 10518151/how-to-check-in-command-line-if-a-given-file-or-directory-is-locked-used-by-any?answertab=active#tab-top
Rem Thanks for dbenham for this nice trick ;)
Mode con cols=90 lines=5 & color 9E
Title Scan and Check for Locked Files by Hackoo 2017 
set "LogFile=%~dp0%~n0.html"
(
    echo ^<html^>
    echo ^<title^> Scan and Check for locked files by Hackoo 2017^</title^>
    echo ^<body bgcolor^=#ffdfb7^>
    echo ^<center^>^<b^>Log Started on %Date% @ %Time% by the user : "%username%" on the computer : "%ComputerName%"^</b^>^</center^>
)> "%LogFile%"
echo(
echo       --------------------------------------------------------------------------
echo         Please Wait a while ....... Scanning for locked files is in progress 
echo       --------------------------------------------------------------------------
Rem We Play radio just for fun and in order to let the user be patient until the scan ended
Call :Play_DJ_Buzz_Radio
Timeout /T 3 /nobreak>nul
cls
Set Folders=^
^ "%ProgramData%\Microsoft\Windows\Start Menu\Programs\Startup"^
^ "%UserProfile%\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup"^
^ "%ProgramFiles%\Internet Explorer"^
^ "%ProgramFiles%\Skype"^
^ "%ProgramFiles%\TeamViewer"^
^ "%WinDir%\system32\drivers"^
^ "%Temp%" 

@For %%a in (%Folders%) Do (
    ( echo ^<hr^>^<font color^=DarkOrange^>^<B^>Folder : %%a^</B^>^</font^>^<hr^>) >> "%LogFile%"
    @for /f "delims=" %%b in ('Dir /A-D /s /b "%%~a\*.*"') do (
        Call :Scanning "%%~nxb"
        Call:Check_Locked_File "%%~b" "%LogFile%"
    )
)

(
    echo ^<hr^>
    echo ^<center^>^<b^>Log ended on %Date% @ %Time% on the computer : "%ComputerName%"^</b^>^</center^>
    echo ^</body^>
    echo ^</html^>
)>> "%LogFile%"
Start "" "%LogFile%" & Call :Stop_Radio & exit
::***********************************************************************************
:Check_Locked_File <File> <LogFile>
(
    2>nul (
    >>%1 (call )
    ) && ( @echo ^<font color^=green^>file "%~1"^</font^>^<br^>
    ) || ( 
        @echo ^<font color^=red^>file "%~1" is locked and is in use^</font^>^<br^> 
    ) 
)>>%2 2>nul
exit /b
::***********************************************************************************
:Scanning <file>
cls
echo(
echo       --------------------------------------------------------------------------
echo          Please Wait a while... Scanning for %1
echo       --------------------------------------------------------------------------
exit /b
::***********************************************************************************
:Play_DJ_Buzz_Radio
Taskkill /IM "wscript.exe" /F >nul 2>&1
Set "vbsfile=%temp%\DJBuzzRadio.vbs"
Set "URL=http://www.chocradios.ch/djbuzzradio_windows.mp3.asx"
Call:Play "%URL%" "%vbsfile%"
Start "" "%vbsfile%"
Exit /b
::**************************************************************
:Play
(
echo Play "%~1"
echo Sub Play(URL^)
echo    Dim Sound
echo    Set Sound = CreateObject("WMPlayer.OCX"^)
echo    Sound.URL = URL
echo    Sound.settings.volume = 100
echo    Sound.Controls.play
echo    do while Sound.currentmedia.duration = 0
echo        wscript.sleep 100
echo    loop
echo    wscript.sleep (int(Sound.currentmedia.duration^)+1^)*1000
echo End Sub
)>%~2
exit /b
::**************************************************************
:Stop_Radio
Taskkill /IM "wscript.exe" /F >nul 2>&1
If Exist "%vbsfile%" Del "%vbsfile%"
::**************************************************************
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Melony?
5楼-- · 2019-01-03 03:19

In case you want to use this in a Cygwin Bash, here are the one-liners: 

# To lock a file: (in a different window)
cmd.exe /C "( >&2 pause ) >> test.txt"
#Press any key to continue . . .

# To test if a file is locked (with text)
cmd.exe /C "2>nul ( >>test.txt (call ) ) && (echo ok) || (echo locked)"
#locked

# To test if a file is locked (with POSIX exit code)
cmd.exe /C "2>nul ( >>test.txt (call ) ) && (exit /b 0) || (exit /b 1)"
echo $?
#1
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三岁会撩人
6楼-- · 2019-01-03 03:21 
:: Create the file Running.tmp

ECHO %DATE% > Running.tmp
ECHO %TIME% >> Running.tmp

:: block it and do the work

(
  >&2 CALL :Work 30
) >> Running.tmp

:: when the work is finished, delete the file
DEL Running.tmp
GOTO EOF

:: put here the work to be done by the batch file

:Work
ping 127.0.0.1 -n 2 -w 1000 > NUL
ping 127.0.0.1 -n %1 -w 1000 > NUL

:: when the process finishes, the execution go back
:: to the line after the CALL
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兄弟一词,经得起流年.
7楼-- · 2019-01-03 03:23

In addition to great answer from dbenham, the following form finally help me understand used technique:

( type nul >> file.txt ) 2>nul || echo File is locked!

type nul command gives an empty output and does not affect the current echo setting like echo off command in orginal.

If you want to use if–then–else condition remember of correct order - success statement (&&) is going first and alternate statement (||) is going second:

command && (echo Command is successful) || (echo Command has failed)
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