Date: Wed, 22 Jan 2014 13:32:10 -0600 From: Martin McCormick <martin@dc.cis.okstate.edu> Cc: freebsd-questions@freebsd.org Subject: Unusual Exit Behavior Message-ID: <201401221932.s0MJWAtk073598@x.it.okstate.edu>
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The strangest thing just happened on a FreeBSD9.1 system. I had used ssh to access this system in command-line mode from a Linux platform running screen so it is possible that the behavior came from either the Linux box or the FreeBSD system but here is what happened. I was on the FreeBSD system in bash, testing a perl script I was writing and I called calc to tell me the answer to a simple subtraction problem. It gave me the answer but then there was no shell prompt. Thinking this was odd, I hit Return a couple of times with nothing so I typed Control-C and got a message stating something like "abort level 1." Each Control-C I typed incremented the abort level until at about 3 or 4, I did get the shell prompt back. Every time I ran calc, I got that behavior. I could short-circuit the odd exit by typing Control-D, but calc wouldn't just end like it always does if you type something like calc 86400-3600 I finally caused screen on the Linux box to exit, killing all the open sessions and when I restarted screen again and re-connected to the same FreeBSD box, everything was totally back to normal. I am pretty sure I set something that thankfully unset after the logout, but what could it have been? I don't really think this had anything to do with calc but at this stage, I would believe just about anything. I have been using unix for about 22 years and I am not sure I have ever seen this before. Martin McCormick
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