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Scientific rounding

The scientific rounding is more precise when having a large set of numbers which need to be rounded.

• number is odd: round up
• number is even: round down

Example:

Without rounding

1.5 + 2.5 + 3.5 + 4.5 + 5.5 + 6.5 + 7.5 + 8.5 + 9.5 = 49.5

Nearest whole number (kaufmännisches Runden)

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Avoiding prompts

To avoid any prompts from Debian packages like Grub or mySQL, you can temporarily set an environment variable. This ideal for provisioning scripts in Containers like Vagrant/Docker.

export DEBIAN_FRONTEND="noninteractive"

Also make sure to auto confirm apt with the -y parameter

apt -y upgrade

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Update

sudo apt update
sudo apt upgrade

Try to upgrade dist

sudo apt dist-upgrade
sudo apt autoremove

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find . -type f -print -exec shred -u {} \;