AIX

I have 2 AIX 6.1 systems running on PowerPCs - production and .. .everything else. . Until the installation of a TLS certificate in an application, some copying of files ("cloning an environment") and upgrading a listener, sending a kill -15 worked on any script/application, so long as we were using the same user.

Specifically, we start listeners, which launches a java process in this application (Ellucian Colleague) and it creates a "stopdmi" script which issues a kill -15 <Listener'sPID>. However, that's no longer functioning.

I went to our other system and created the following simple script:

Code:

#!/bin/ksh

trap "echo 'Received Kill signal'; exit" SIGHUP SIGINT SIGTERM

while true;do
    echo "waiting..."
done

chmod 700 that and run it as some user - let's say "jim". I see a screenful of "waiting" now. Open up another terminal and log in as Jim. Do a kill <scriptPID> - no response. Do a kill -9 and it works just fine (considering it's a SIGKILL... not good on a production java app).

I've tried this on CentOS 7.x and FreeBSD (sorry -whichever version FreeNAS 9.x is running on) and it behaves as I expect - the script stops.

The same issue happens if I take the trap statement out on AIX - only kill -9 will terminate the process.

Can anyone clue me in to what is going on? Is there some reason AIX doesn't behave like other *nix systems?

Thank you in advance for any help you can give me...