Set ip lan address /etc/environment

[Maykel Franco via arch-general <arch-general@xxxxxxxxxxxxx>]

Hi, I put this text in /etc/environment:

$ source /etc/environment

ip="$(ifconfig | grep -A 1 'eth0' | tail -1 | cut -d ':' -f 2 | cut -d
' ' -f 1)"

$ echo $ip

192.168.0.33

Works fine, but when I reboot my archlinux:

$ echo $ip

$(ifconfig | grep -A 1 'eth0' | tail -1 | cut -d ':' -f 2 | cut -d ' ' -f 1)


What's happened?? Is necessary exec source /etc/environment after every reboot?

Thanks in advanced.