hostsed is a simple python tool for editing hosts file(/etc/hosts), you can add or delete a DNS entry via command line shell(e.x. bash).
Install:
sudo pip install hostsed
Usage:
# Add an entry
sudo hostsed add <ip address> <hostname1> <hostname2> ...
Example:
sudo hostsed add 192.168.1.1 gateway
sudo hostsed add 172.17.0.5 mongo-store-1 mysql-02
# Delete an entry
sudo hostsed del <ip address> <hostname>
Example:
hosted remove 192.168.1.1 gateway
# Get the ip address of a docker container
sudo hostsed docker <docker-container-name>