how can i add extension to multiple extensionless files on windows 10 . Powershell command doesn't work

Question

how can add extension to multiple file on windows 10 using windows powershell

hi, how can i add extensions to multiple extensionless files on windows 10

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when i right click on folder  holding shift key then choose powershell because there is no command prompt

and enter this command ren *. *.jpeg it doesn't work even ren * *.jpeg didn't work also

i tried using cmd prompt by from start menu then locating file using cd then file location then typed the first command it worked so what is the right command for windows power shell and if there are any other methods it would be great

Answer 1

there is a command 

Get-ChildItem *.| Rename-Item -newname { $_.name -replace '.','.' }

but didn't work for naming nameless  files

it worked fine for change extensions for those of extensions

Answer 2

Try:

Get-ChildItem * | Rename-Item -newname { $_.name -replace '.','.' }

Answer 3

ren * *.jpeg it only works if the files has already dedicated extensions 

Not true!

Answer 4

ren * *.jpeg it only works if the files has already dedicated extensions 

Not true!

we are talking about windows powershell not command prompt

Answer 5

i tried that already not working tried to remove the point the inserting space not working i is a different code i think i don; know why microsoft is using bad complicated codes