TimeStamp on file name using PowerShell

Question

I have a path in a string    C  temp mybackup zip   I would like insert a timestamp in that script  for example    C  temp mybackup 2009-12-23 zip   Is there an easy way to do this in PowerShell

User · Answer

I needed to export our security log and wanted the date and time in Coordinated Universal Time. This proved to be a challenge to figure out, but so simple to execute:

wevtutil export-log security c:\users\%username%\SECURITYEVENTLOG-%computername%-$(((get-date).ToUniversalTime()).ToString("yyyyMMddTHHmmssZ")).evtx

The magic code is just this part:

$(((get-date).ToUniversalTime()).ToString("yyyyMMddTHHmmssZ"))

User · Answer

You can insert arbitrary PowerShell script code in a double-quoted string by using a subexpression  for example      like so    C  temp mybackup   get-date -f yyyy-MM-dd  zip    And if you are getting the path from somewhere else - already as a string    dirName     io path   GetDirectoryName  path   filename    io path   GetFileNameWithoutExtension  path   ext         io path   GetExtension  path   newPath      dirName  filename   get-date -f yyyy-MM-dd  ext    And if the path happens to be coming from the output of Get-ChildItem   Get-ChildItem   zip   Foreach           DirectoryName       BaseName    get-date -f yyyy-MM-dd      extension

User · Answer

Use    filenameFormat    mybackup zip           Get-Date -Format  yyyy-MM-dd   Rename-Item -Path  C  temp mybackup zip  -NewName  filenameFormat

User · Answer

Here s some PowerShell code that should work  You can combine most of this into fewer lines  but I wanted to keep it clear and readable    string  filePath    C  tempFile zip     string  directory    System IO Path   GetDirectoryName  filePath    string  strippedFileName    System IO Path   GetFileNameWithoutExtension  filePath    string  extension    System IO Path   GetExtension  filePath    string  newFileName    strippedFileName    DateTime   Now ToString  yyyyMMdd-HHmmss      extension   string  newFilePath    System IO Path   Combine  directory   newFileName    Move-Item -LiteralPath  filePath -Destination  newFilePath

User · Answer

Thanks for the above script  One little modification to add in the file ending correctly  Try this       filenameFormat    MyFileName           Get-Date -Format  yyyy-MM-dd         txt     Rename-Item -Path  C  temp MyFileName txt  -NewName  filenameFormat

[powershell] TimeStamp on file name using PowerShell

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