As a VPS or Dedicated Server account owner, you may want to check to see who is actively online and send a broadcast message to them. The short article below takes you through using the
wall commands. Neither command requires root access.
How to see who is logged in
- Log into your account via SSH
- Run the
whocommand from the command prompt. This will list anyone who is currently logged in.
You should receive some output similar to the sample below. As you can see, the users root and bradm are logged in.
root pts/2 2013-01-25 12:53 bradm pts/3 2013-01-25 12:58
How to send a message to online users
# wall This is a message <ctrl-d>
Broadcast message from root (pts/2) (Fri Jan 25 12:52:25 2013): This is a message