windows - 在 CMD 中使用 findstr 从文件中获取 MD5 值

Question

我有以下文件内容，我想从中提取第 2 行的 MD5 哈希值。

如何在 Windows 批处理文件中执行此操作？不幸的是，使用 powerscript 不是一种选择。

这里是输入文件(file.txt)

MD5hashoffile20160613190010_Address
f4f855c5cb40767a7227b506f641ceef
CertUtil:-hashfilecommandcompletedsuccessfully.

我想使用 findstr 实用程序，但我使用的正则表达式一定是错误的，因为它没有返回任何内容。

findstr /R "[a-fA-F0-9]{32}" file.txt

我很感激任何建议。

谢谢

更新:

我已经在答案部分添加了完整的解决方案。

Answer 1

经过反复试验，我找到了一个可行的解决方案:

findstr /R "^[a-fA-F0-9]*$" file.txt

包含完整解决方案的更新答案:

SETLOCAL ENABLEDELAYEDEXPANSION

SET "FILESIZE=0"
SET "RECORDCOUNT=0"
SET "MD5HASH="
SET "TEMPHASH="
SET "FILESETREPORT=_UNSET"
SET "LINE=0"
SET "COLUMNS=TableName|RecordCount|FileSize|FileHash"

echo "============================="
echo "= Starting FileSize process ="
echo "============================="

for %%F in (*.csv) do (
  echo "Process A CSV File"

  for /f "tokens=1,2,3,4 delims=^_" %%A IN ("%%~nF") do (  
    SET "TABLENAME=%%D"
    SET "FILESIZE=%%~zF" 
    if "!FILESETREPORT!" == "_UNSET" (       
      SET "FILESETREPORT=%%A_%%B_%%C_FilesetReport.csv"
      :: Initialize the headers
      echo !COLUMNS! > !FILESETREPORT!
    )        
  )  
  echo "Get RecordCount in CSV"
  if "!TABLENAME!" NEQ "FilesetReport" (
    for /f "tokens=*" %%I in ('more +1 %%F ^| find /v /c ""') do SET "RECORDCOUNT=%%I"
    echo "Generate File MD5 Hash"    
    certUtil -hashfile %%~nxF MD5 > hashfile    
    echo "Get the hash from the file"        
    for /f "skip=1 tokens=*" %%A in (hashfile) do (
      SET "TEMPHASH=%%A"
      :: call :cleanHash
      if !LINE! == 0 SET "LINE=1" && call :cleanHash      
    )

    :: Reset the Line Number
    SET "LINE=0"

    echo "Save File Details to FieldsetReport"
    echo "RecordCount : !RECORDCOUNT!"
    echo "FileSize : !FILESIZE!"
    echo "MD5Hash : !MD5HASH!"
    echo "TableName : !TABLENAME!"
    SET "OUTPUTLINE=!TABLENAME!|!RECORDCOUNT!|!FILESIZE!|!MD5HASH!"
    echo !OUTPUTLINE! >> !FILESETREPORT!

    :: Cleanup    
    del hashfile    
  )
)

echo "File Processing Completed"
exit /b 0

:cleanHash
echo "Remove all spaces from the MD5 hash"
:: for /f "delims=" %%a in ('findstr /R "^[a-fA-F0-9]*$" !TEMPHASH!') do SET TEMPHASH=%%a            
SET "MD5HASH=!TEMPHASH: =!"
echo "********************************************************************"
echo !MD5HASH!

ENDLOCAL