This one time, at band camp, Adam W wrote:
>1) how do i kick people off my linux box that are logged in via ssh or
>someother means i.e how do i get rid of them out of "w"

be root, and kill the shell process

>2) how do i send messages to people logged in on ssh etc. Similar to
>when you halt the system.

"write username", or "write username tty"

it takes the message on standard input, so hit Ctrl-D when done.

when the system shutsdown it uses wall, which is short for "write all"

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