... To be able to edit the Perl scripts and .tmpl files it is necessary to chown and chgrp -R twiki so all the files have the owner you want. NOTE: This Guide assumes user nobody ownership for all files manipulated by the CGI scripts (executed by the Web server), and user twiki for all other files. ... If your CGI scripts are not running as user nobody , it's not possible to check in files (you'll see that the revision number won't increase after saving a topic). ...