Memo

sudo show runningconfiguration all
sudo config load partial_settings.json
sudo cat /etc/sonic/config_db.json
sudo config save -y
sudo config reload -y

sudo config vlan add 1
sudo config vlan add 2

# untagged
sudo config vlan member add -u 1 Ethernet48

# tagged
sudo config vlan member add 2 Ethernet52

sudo config vlan member del 1 Ethernet48
sudo config vlan member del 1 Ethernet52

sudo config vlan del 1
sudo config vlan del 2

show vlan brief     
show vlan config

# not workinng
sudo config vlan add 10,20
sudo config vlan add 10-20

# working
V=(1 2 3 4 5 6)
for v in ${V[@]}; do echo config vlan member add $v Ethernet0; done