ren- turns file into a folder

[Kevin]

the date string would of course always output but would not work as a filename because your not allowed to use / in filenames.

Please show your code
should look like this.
 

Code:

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Dir d
foreach(d "G:\last backup*.txt" FE_Dir)
,str path=d.FullPath
,if(path.len)
,,str s.timeformat("{D} {hhmmss}")
,,s.ReplaceInvalidFilenameCharacters("-")
,,str n.from("G:\last backup" s ".txt")
,,ren- path n