Thanks again for your reply. I have eventually managed to activate 7-zip using the following code: data _null_ ;      unzipcmd=     ' "C:\Program Files\7-zip\7z.exe" ' ;      zipfile=           'C:\MyDocuments\zipfile.zip' ;      whereto=        'C:\MyDocuments\target_dir\' ;       cmd=unzipcmd || ' x ' || zipfile || ' o-' || whereto ; putlog "NOTE-Files are extracted" cmd ; call system(cmd); run; I realise I can make this more flexible using macro variables and things like that, but for now, this does work. Thanks! ... View more