# REPLACE IN FILE
sed -i s'/ETCD_INITIAL_CLUSTER_STATE="new"/ETCD_INITIAL_CLUSTER_STATE="existing"/'g /etc/etcd/etcd.conf

# REPLACE
sed 's/A/B/g'

# sed replace carriage return with space
sed ':a;N;$!ba;s/\n/ /g'

# Sed change parameter in config
echo Password="123" | sed  's/\(Password=\).*$/Password=555/'
echo Password = "123" | sed 's/\(Password = \).*$/Password = "777"/'