I) Here are ways summarized to find out or get the IP address of your computer via console.
a) most complicated but most to the point command is
ip route get 1.2.3.4 | grep -oP '(?<=src )\S+'
b) a little confusing result is shown with
ip address
or
ip addr
or
ip a
c) shows the default IP address of your WLAN router but also your PC IP address is included.
ip route show
d) should show the ip address under IP4.ADDRESS
nmcli -p device show
e) Install “net-tools” than use the command
ifconfig -a
f) simply look into your router and you can find the ip address to your device.
II) a) hostname of your PC
hostname
echo $HOSTNAME
b) Here you can also find out the hostname of your PC. The IP address of the router but not of your PC is also shown.
getent hosts