Re: how to check the server can be connected or not
>> On Fri, 3 Feb 2012 11:49:22 +0800, lina <email@example.com> said:
L> Hi, a server is closed, but will start in future, sooner or later, I
L> wish to access in the first time it's open. I tried:
L> while ( ssh server ) do sleep 60 done
L> wall < server_open.txt
Instead of polling the server, could you have it send a mail message to
a special address when starting SSH? If you're running the while-loop
on your workstation, set up an extension address like
which forwards incoming mail from the SSH server to /usr/bin/wall.
If you use Postfix, see the http://www.postfix.org/local.8.html sections
on ADDRESS EXTENSION and EXTERNAL COMMAND DELIVERY.
Karl Vogel I don't speak for the USAF or my company
The patient is tearful and crying constantly.
She also appears to be depressed. --actual comment on hospital chart