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====== 2.3 System configuration after Setup of Operating System ======

===== System Update =====

Update your system:

<code>
sudo bash
apt update && apt upgrade && reboot now
</code>


===== System configuration =====

==== Unique hostname ====

set up a unique hostname - especially, if you have multiple Pi's. for simplicity, i would suggest ''scannerNN'' - replacing //NN// with a number:

<code>
sudo hostnamectl set-hostname scannerNN
sudo nano /etc/hosts
hostnamectl
</code>


==== Timezone ====

Not mandatory, but i would suggest to set UTC:

<code>
sudo timedatectl set-timezone UTC
timedatectl
</code>


==== WiFi country ====

In case you want to use WiFi

<code>
sudo iw reg get
sudo iw reg set DE
sudo iwlist wlan0 frequency
</code>

you should replace above ''DE'' with //your// wifi country; check https://en.wikipedia.org/wiki/ISO_3166-1_alpha-2


==== Localization / Languages ====

<code>
sudo dpkg-reconfigure locales
</code>

i would suggest to select ''en_US.UTF-8'' as default language