Powershell Command: rm -rf

powershell command cmd rm
BK_ picture BK_ · May 4, 2012 · Viewed 66.8k times · Source

I did a bit of research and I'm still not sure exactly what it does. I know rm is remove item, but I couldn't find any documentation on -rf. Whenever I typed help -rf it printed the entire list of available commands in powershell. What happens if you type rm -rf in powershell? From reading around I've gathered that it will delete everything on the drive? I'm not sure?

Also, is rm -rf same as rm -rf /

Answer

Mahmoud Al-Qudsi picture Mahmoud Al-Qudsi · May 4, 2012

PowerShell isn't UNIX. rm -rf is UNIX shell code, not PowerShell scripting.

  • This is the documentation for rm (short for Remove-Item) on PowerShell.
  • This is the documentation for rm on UNIX.

See the difference?

On UNIX, rm -rf alone is invalid. You told it what to do via rm for remove with the attributes r for recursive and f for force, but you didn't tell it what that action should be done on. rm -rf /path/to/delete/ means rm (remove) with attributes r (recursive) and f (force) on the directory /path/to/remove/ and its sub-directories.

The correct, equivalent command on PowerShell would be:

rm C:\path\to\delete -r -fo

Note that -f in PowerShell is ambiguous for -Filter and -Force and thus -fo needs to be used.

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