Date: 2015may29 Q. How can I make all installed packages up-to-date? A. RedHat/CentOS

yum update yum -y update (Say "yes" to everything - run unattended)

I have found the GUI (Software Update) doesn't work. Maybe it needs to checking occasionally. Fedora

dnf update dnf -y update (Say "yes" to everything)

Ubuntu

# First update sudo apt-get update # Then upgrade sudo apt-get upgrade sudo apt-get -y upgrade (Say "yes" to everything)

If you prefer a GUI, you can search for "Updater" and click on "Software Updater" FreeBSD

pkg upgrade env ASSUME_ALWAYS_YES=YES pkg upgrade (Says "yes" to everything)

FreeBSD on two lines (saying "yes" to everything)

export ASSUME_ALWAYS_YES=YES pkg upgrade

Do not use `pkg update` which just updates the repositories.