(I thought I'd try a re-post on this, since previous attempt was probably at a bad time.)
After spitting out a bunch of diagnostics to /dev/tty, a program freezes the whole system so that no keyboard or mouse actions have any effect. How could I capture those diagnostic messages to disk in real time, before the freeze?
I thought I'd use the "screen" command and turn on logging, but "screen" buffers its output to disk so the final 10 lines of warning messages are lost. I solved that problem, this time, by re-running the test and transcribing those last 10 lines from the frozen screen onto paper.
Is there a way to force /dev/tty to disk, unbuffered? Could I munge the "controlling terminal" identity so output goes to disk?
Or, is there some way I could open up an ssh from another computer with logging turned on there, and then tell the job it was running from that PTY?
Just curious . . .
Vic
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