ssh user@machine_name perl sar1.pl -e start -p -wW -i 3

##</code><code>##

local$ ssh you@remote.host
remote$ env > my-remote-login.env
remote$ exit

local$ scp you@remote.host:my-remote-login.env .
local$ ssh you@remote.host env > my-remote-nonlogin.env
local$ diff my-remote-login.env my-remote-nonlogin.env