How to Connect to a Remote Server using SSH on Ubuntu?

 Syntax:

ssh remote_username@remote_host
SSH Command to Connect to Server in Ubuntu:
after fire this command, you need to enter password for that server. you can see command with output.
ssh root@134.111.111.111

SSH Command to Connect to Server using pem file in Ubuntu:
after fire this command, you have pem file and you can pass one more parameter here:
Give pem file permission:
chmod 400 ec2private.pem

ssh -i ec2private.pem root@134.111.111.111