Spying on the physical console
When you connect to your remote Linux server using SSH, sometimes you would like to see the message that appear in the console, you can view using the following method:
# tail -f /dev/vcs1
Where vcs1 means the virtual terminal 1, possible options are 1, 2, 3, 4 etc.
The method will save you many time from always need to visit the physical server.