Arch Linux

error: failed to prepare transaction (could not satisfy dependencies)
:: ffmpeg2.8: installing x265 (2.8-1) breaks dependency 'libx265.so=151-64'

sudo pacman -Sy vlc
sudo pacman -R ffmpeg2.8
sudo pacman -Syu

$ cat ~/.config/yay/config.json
$ sudo chmod a+rwx ~/.cache/yay

$ sudo systemctl list-unit-files --no-pager |grep -e network
$ sudo systemctl start systemd-networkd　
$  ls /sys/class/net
eth0
$ sudo vim /etc/systemd/network/eth0.network
[Match]
Name=eth0
[Network]
Address=192.168.x.x/x
Gateway=192.168.x.1
DNS=192.168.x.1
$ sudo systemctl restart systemd-networkd

$  ls /sys/class/net
wlan0
$ ip link set wlan0 up
$ sudo vim /etc/systemd/network/wlan0.network
[Match]
Name=wlan0
[Network]
Address=192.168.x.x/x
Gateway=192.168.x.1
DNS=192.168.x.1

$ sudo systemctl restart systemd-networkd

[Network]
DHCP=ipv4 
#DHCP=yes

$ ip a
$ sudo systemctl status systemd-networkd
$ sudo systemctl status systemd-resolved

$ sudo systemctl enable systemd-networkd
# sudo systemctl list-unit-files --no-pager |grep -e network
# sudo systemctl daemon-reload

$ sudo vim /etc/wpa_supplicant/wpa_supplicant-wlan0.conf
network={
    ssid="xxxxx"
    psk="xxxx"
}

$ sudo systemctl enable wpa_supplicant@wlan0

ip link set dev %i up
wpa_supplicant -B -i %i -c /etc/wpa_supplicant.conf
ip addr add $address/$netmask broadcast $broadcast dev %i
ip route add default via $gateway

$ ip link set dev wlan0 down
$ pkill wpa_supplicant