Batch file 用上一个日期文件解密文件
我每天都会收到带有昨天日期戳的.gpg文件（例如my_daily_export_20170908.csv.gpg），如果我将日期戳更改为当前日期，但不是昨天日期，我可以解密该文件，有什么想法吗？我的代码如下：Batch file 用上一个日期文件解密文件,batch-file,encryption,gnupg,Batch File,Encryption,Gnupg,我每天都会收到带有昨天日期戳的.gpg文件（例如my_daily_export_20170908.csv.gpg），如果我将日期戳更改为当前日期，但不是昨天日期，我可以解密该文件，有什么想法吗？我的代码如下： @echo off for /f "delims=" %%a in ('wmic OS Get localdatetime ^| find "."') do set "dt=%%a" set "YYYY=%dt:~0,4%" set "MM=%dt:~4,2%" set "DD=%dt
@echo off
for /f "delims=" %%a in ('wmic OS Get localdatetime ^| find "."') do set "dt=%%a"
set "YYYY=%dt:~0,4%"
set "MM=%dt:~4,2%"
set "DD=%dt:~6,2%"
set "HH=%dt:~8,2%"
set "Min=%dt:~10,2%"
set "Sec=%dt:~12,2%"
set "secret=mypassphrase"
set datestamp=%YYYY%%MM%%DD%
set "origPath=Y:\"
set "origFile=my_daily_export_"
set "origExt=.csv.gpg"
set "origCompleteFile=%origPath%%origFile%%datestamp%%origExt%"
set "destPath=G:\"
set "destFile=my_daily_export_"
set "destExt=.csv"
set "destCompleteFile=%destPath%%destFile%%datestamp%%destExt%"
set "ctaFolder=S:\"
echo Decrypt file: "%origCompleteFile%"
echo Save decrypted file in: "%destCompleteFile%"
rem Decrypt CTA file
gpg --batch --passphrase "%secret%" -o "%destCompleteFile%" --decrypt "%origCompleteFile%"
rem Copy to CTA folder in .54
%SystemRoot%\System32\xcopy.exe "%destCompleteFile%" "%ctaFolder%" /Q /Y >nul
endlocal
我建议简化工作，不要依赖文件名中的时间戳 下面注释的批处理代码对设置了存档文件属性的每个文件解密一次，并忽略所有其他文件
@echo off
setlocal EnableExtensions DisableDelayedExpansion
rem All folder paths must end with a backslash!
set "ctaFolder=S:\"
set "decryptFolder=G:\"
set "encryptFolder=Y:\"
set "secret=mypassphrase"
set "Error=0"
rem Process all files matching the wildcard pattern in folder with the
rem encrypted files having the archive attribute set. Skip all directories
rem and all files matching also the pattern having archive attribute not
rem set anymore as being processed already once in the past by this script.
for /F "delims=" %%I in ('dir /AA-D /B "%encryptFolder%\my_daily_export_*.csv.gpg" 2^>nul') do call :DecryptFile "%encryptFolder%%%I"
rem Output an empty line and standard user prompt for any key
rem press in case of a decryption or copying error occurred.
if %Error% == 1 echo/ & pause
endlocal
goto :EOF
rem DecryptFile is a subroutine called by the FOR loop above to
rem decrypt the file passed as first argument to the subroutine
rem which must be with full path and enclosed in double quotes.
rem An error message is output if gpg.exe fails to decrypt the file
rem detected by exit code of gpg or by decrypted file missing or by
rem decrypted file has a file size of 0 bytes in which case the empty
rem output file is deleted before batch file processing continues.
rem The file is copied to the cta folder after successful decryption
rem with verification on successful copying. Otherwise the decrypted
rem file is kept in decrypt folder and an error message is output.
rem The archive attribute on encrypted file is removed after successful
rem decryption and copying to cta folder. So this file is not processed
rem once again in future except it is modified or copied once again into
rem folder for encrypted files on which Windows sets the archive attribute
rem automatically again on this file.
:DecryptFile
gpg.exe --batch --passphrase "%secret%" -o "%decryptFolder%%~n1" --decrypt %1 2>nul
if errorlevel 1 goto FailedDecrypt
if not exist "%decryptFolder%%~n1" goto FailedDecrypt
for /F %%J in ("%decryptFolder%%~n1") do if %%~zJ == 0 goto FailedDecrypt
set "CopiedCount=0"
for /F %%J in ('%SystemRoot%\System32\xcopy.exe "%decryptFolder%%~n1" "%ctaFolder%" /C /Q /V /Y 2^>nul') do set "CopiedCount=%%J"
if not "%CopiedCount%" == "1" (
echo Failed to copy "%decryptFolder%%~n1" to "%ctaFolder%"
set "Error=1"
goto :EOF
)
%SystemRoot%\System32\attrib.exe -a %1
goto :EOF
:FailedDecrypt
del "%decryptFolder%%~n1" 2>nul
echo Failed to decrypt file: %1
set "Error=1"
goto :EOF
YYYYMMDD@echo off
setlocal EnableExtensions DisableDelayedExpansion
rem All folder paths must end with a backslash!
set "ctaFolder=S:\"
set "decryptFolder=G:\"
set "encryptFolder=Y:\"
set "secret=mypassphrase"
rem With all files matching pattern my_daily_export_????????.csv.gpg
rem containing the date in format YYYYMMDD in file name the list output by
rem DIR in reverse order sorted by name results in getting as first line
rem output the newest file in the folder. This file has to be decrypted.
for /F "delims=" %%I in ('dir /A-D /B /O-N "%encryptFolder%\my_daily_export_????????.csv.gpg" 2^>nul') do (
set "FileNameFull=%encryptFolder%%%I"
set "FileNameOnly=%%~nI"
goto DecryptFile
)
goto ExitBatch
rem DecryptFile block decrypts the file specified which full file
rem name which is assigned to the environment variable FileNameFull.
rem An error message is output if gpg.exe fails to decrypt the file
rem detected by exit code of gpg or by decrypted file missing or by
rem decrypted file has a file size of 0 bytes in which case the empty
rem output file is deleted before batch file processing continues.
rem The file is copied to the cta folder after successful decryption
rem with verification on successful copying. Otherwise the decrypted
rem file is kept in decrypt folder and an error message is output.
:DecryptFile
gpg.exe --batch --passphrase "%secret%" -o "%decryptFolder%%FileNameOnly%" --decrypt "%FileNameFull%" 2>nul
if errorlevel 1 goto FailedDecrypt
if not exist "%decryptFolder%%FileNameOnly%" goto FailedDecrypt
for /F %%I in ("%decryptFolder%%FileNameOnly%") do if %%~zI == 0 goto FailedDecrypt
set "CopiedCount=0"
for /F %%I in ('%SystemRoot%\System32\xcopy.exe "%decryptFolder%%FileNameOnly%" "%ctaFolder%" /C /Q /V /Y 2^>nul') do set "CopiedCount=%%I"
if not "%CopiedCount%" == "1" (
echo Failed to copy "%decryptFolder%%FileNameOnly%" to "%ctaFolder%"
echo/
pause
)
goto ExitBatch
:FailedDecrypt
del "%decryptFolder%%FileNameOnly%" 2>nul
echo Failed to decrypt file: "%FileNameFull%"
echo/
pause
:ExitBatch
endlocal
/O-Dattrib/？呼叫/？del/？dir/？echo/？endlocal/？获取/？goto/？gpg--help如果/？暂停/？rem/？设置/？setlocal/？xcopy/？
2>nul请阅读上的答案，了解操作员的解释
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