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How to send instant message to different type of users on Solaris

Publication Date:  2012-07-25 Views:  5 Downloads:  0
Issue Description
while you are going to shutdown or reboot the Soaris system , how to notify other users online at same time.
Alarm Information
null
Handling Process
1.Send message to one specific user  using the command wirte
$write username
message content for example "hello, please logout system"
ctrl-d
$
type the command "ctrl-d" to finish the communication  and quit write command status
2.Send message to all the users using the command wall
$wall 
hello ,i love you ......
ctrl-D
$
type the command "ctrl-D" to finish the communication  and quit wall command status
3.Send message to specific workgroup users using the command rwall
$rwall -n workgroup
hello ,i love you ......
ctrl-d
$
type the command "ctrl-d" to finish the communication  and quit rwallcommand status
Root Cause
null
Suggestions
In case of the configuration lost, it's important to notify all the online users in advance that some action will be done, for example:shutdown,reboot Solaris Server

END