VI Editor is not properly working and adding extra special character while while moving my mouse in the below file. I am not sure why it is behaving like this. Please advise and help. Thanks!
Topic : The Client Demonstration
Task 5 : Add an entry host “all all 0.0.0.0/0 md5” to the end of the file /etc/postgresql/10/main/pg_hba.conf on the DB server.
sudo vi /etc/postgresql/10/main/pg_hba.conf