file / extension renaming

[joe]

hi

I have hundreds of log files in a directory named (any name).12345 (the extension is of five digits).
my request is to rename all files in that folder with a unique name and .txt extension.

[aGerman]

How should your unique names look like? And is there any rule where to start (e.g. by file name ascending or by file time)?
Another possibility could be to just append .txt to the files. They would look like "whatevername.12345.txt" afterwards.

Steffen

[joe]

yes just append a .txt to file because its already names with ddmmyyhhmmss format

[aGerman]

Code: Select all

for /f "delims=" %%i in ('dir /a-d /b *.* ^| findstr /e "\.[0-9][0-9][0-9][0-9][0-9]"') do (
  ren "%%~i" "%%~i.txt"
  REM ren "%%~i" "%%~ni.txt"
)

The commented line would replace the extension .12345 with .txt while the first line appends .txt to the original file name.

Steffen