Assuming no files with spaces in them: 
perl -pi -e 's/(:Timeplaner):Projekt,/$1$1,/' `grep ':Timeplaner:Proje
+kt,' *`

[download]

In reply to Re: "Change, but don't touch" or naive use of perl -pi by Anonymous Monk
in thread "Change, but don't touch" or naive use of perl -pi by Happy-the-monk

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