Hi Peter,

What system are you using? What you have done will work provided that you are on Mac or Linux. If you are on Windows, you need to swap the single and double quotes in the -if expression.

Also, you need to specify a filename, but hopefully that is obvious.

One more note: The -if condition will pass if any keyword contains the string "03_Vortag", but the matching tag will only be deleted if it is exactly "03_Vortag". This probably isn't a concern, but just to warn you that keywords like "003_Vortag" will match but won't get deleted.

- Phil