Progress indicators are these spinning wheels, the digits progressing slowly from 0 to 100 (%) and all that stuff. As the manpage says quiet level 1 "produces output suitable for logging" thousands of lines saying Reading package lists... 0% Reading package lists... 0% Reading package lists... 1% Reading package lists... 2% … aren't that useful and are therefore what is disabled (=thousand of lines as removing previous lines isn't possible on non-tty output). One line telling what is currently done on the other hand is suitable for logging and useful in some cases.
Btw "mysql-server is already the newest version." is not an error message. It is just an information for the user - the command keeps the promise "After the command packge mysql-server is installed" for the user, that it doesn't need to do anything for it isn't an error… ** Changed in: apt (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/874409 Title: apt-get -q flag fails to squelch status -qq hides everything To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apt/+bug/874409/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs