chat between unix users connecting on the same server

when I issue command 'who', I see a user connecting to the server. Is it possible to send a message to this user that will display on his screen?thx
[164 byte] By [Linda_B] at [2007-11-26 11:34:25]
# 1
man write
alanpae at 2007-7-7 3:50:18 > top of Java-index,General,Sys Admin Best Practices...
# 2
you can try man wall, but this will send to all logged in users.
Haythammorsy at 2007-7-7 3:50:18 > top of Java-index,General,Sys Admin Best Practices...
# 3
or possibly 'talk' if you want an interaction. .7/M.
mAbrante at 2007-7-7 3:50:18 > top of Java-index,General,Sys Admin Best Practices...
# 4
write(1) or talk(1) should do it if mesg(1) permissions are set correctly http://docs.sun.com/app/docs/doc/816-5211/6mbcci3sa?a=viewMessage was edited by: MartinHardee
MartinHardee at 2007-7-7 3:50:18 > top of Java-index,General,Sys Admin Best Practices...