I have a directory with files that all have a prefix where I need to have a cmd or bat script to remove the prefix for all files in the directory. I know how to write a script that renames the files to add the prefix to all files but I don't know how to rename all files to remove the prefix. Example: I have a directory which has 4000 files that all begin with prefix_filename.txt I need to have all the files renamed to: filename.txt Any help would be great. Thanks

Try this: :: renamer.bat @echo off :main for %%f in (abc*.txt) do call :renamer %%f goto :eof :renamer set old=%1 ren %1 %old:~3,9% :: end This will remove the first 3 letters of the filename. login: yes password: dont have one password is incorrect login: yes password: incorrect

Oops, that will only work if the prefix is abc, so just change abc*.txt to whatever your prefix is. The part :~3,9% will remove the first 3 letters, so change that to reflect how many letters your prefix is. Hope that helps. Tony login: yes password: dont have one password is incorrect login: yes password: incorrect

There are also programs that will rename filenames with changeable parameters. i.e. replacing, removing, or adding characters, numbering or renumbering, etc.

That worked. Thanks