README.SLACKWARE for atop Some features depend on the 'acct' (BSD accounting) package from Slackware being installed. To enable it, execute the following: touch /var/log/pacct chgrp utmp /var/log/pacct chmod 640 /var/log/pacct accton You may want to have atop start at boot; to do so, add to /etc/rc.d/rc.local the following lines: # Start the accounting top service if [ -x /etc/rc.d/rc.atop ]; then /etc/rc.d/rc.atop fi