Sometimes, we just want to say something to others.
It will be good command for it, but also it could annoy others.
(1) check who there are.
[dwyi@blue00 ~]$ who
root :0 2014-09-26 14:12
hyyoo pts/9 2014-10-24 13:26
(2) let’s talk to hyyoo
$ write hyyoo
write: hyyoo is logged in more than once; writing to pts/9
hi, hyyoo. Let’s have a lunch.
Type “Cntl + d” when you finish the messaging.
So, Simple. 🙂