Shell script with case statement and loop for not working - linux

Question

trying to connect in servers list and execute some commands, this script dont execute second step (AIX)
SO=uname -s
for server in $(cat maq)
do
case $SO in
Linux)
echo "Connecting in $server"
ssh $server
echo "my system is $SO"
"exit"
;;
AIX)
echo "Connecting in $server"
ssh $server
echo "my system is $SO"
"exit"
;;
esac
done
They execute "my server is Linux" for all case choice! Any Help?

Answer 1

(Edited to make it more clear)
You seem to confuse the local OS with the remote OS. The former won't change during the cycle, only the latter. Here is a complete example.
LocalOs="$(uname -s)"
case "$LocalOs" in
Linux)
echo "Local OS is $LocalOs";
;;
AIX)
echo "Local OS is $LocalOs";
;;
*)
echo "Local OS is $LocalOs";
;;
esac
while read server; do
RemoteOs=$(ssh </dev/null "$server" 'uname -s')
case "$RemoteOs" in
Linux)
echo "OS on $server is $RemoteOs"
;;
AIX)
echo "OS on $server is $RemoteOs"
;;
*)
echo "OS on $server is $RemoteOs"
;;
esac
done <"maq"
Edit: also you misunderstood how ssh works in a script. This doesn't work:
ssh remoteuser#remotehost
commands to be executed on remotehost
exit
This works:
ssh remoteuser#remotehost <<EOF
commands to be executed on remotehost
EOF
Simpler case:
ssh remoteuser#remotehost 'command(s) to be executed on remotehost'