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Date: 2015may29 Q. How can I make all installed packages up-to-date? A. RedHat/CentOSyum 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. Fedoradnf update dnf -y update (Say "yes" to everything)Ubuntusudo 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" FreeBSDpkg 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 upgradeDo not use `pkg update` which just updates the repositories.
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