PS1='[\u@192.168.199.158 \W]\$ '
Last login: Sun Jan 25 08:43:07 2015 from 192.168.199.162

clear;echo -e '\033[32mLogin 192.168.199.158 done. Enjoy it.\033[0m'
[halcyon@localhost ~]$ PS1='[\u@192.168.199.158 \W]\$ '
[halcyon@192.168.199.158 ~]$ clear;echo -e '\033[32mLogin 192.168.199.158 done. Enjoy it.\033[0m'
Login 192.168.199.158 done. Enjoy it.
[halcyon@192.168.199.158 ~]$ ll
total 0
[halcyon@192.168.199.158 ~]$